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Publisher: Springer-Verlag (Total: 2351 journals)

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Showing 1 - 200 of 2351 Journals sorted alphabetically
3D Printing in Medicine     Open Access   (Followers: 1)
3D Research     Hybrid Journal   (Followers: 21, SJR: 0.222, CiteScore: 1)
4OR: A Quarterly J. of Operations Research     Hybrid Journal   (Followers: 10, SJR: 0.825, CiteScore: 1)
AAPS J.     Hybrid Journal   (Followers: 22, SJR: 1.118, CiteScore: 4)
AAPS PharmSciTech     Hybrid Journal   (Followers: 7, SJR: 0.752, CiteScore: 3)
Abdominal Imaging     Hybrid Journal   (Followers: 15, SJR: 0.866, CiteScore: 2)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4, SJR: 0.439, CiteScore: 0)
Academic Psychiatry     Full-text available via subscription   (Followers: 26, SJR: 0.53, CiteScore: 1)
Academic Questions     Hybrid Journal   (Followers: 8, SJR: 0.106, CiteScore: 0)
Accreditation and Quality Assurance: J. for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 27, SJR: 0.316, CiteScore: 1)
Acoustical Physics     Hybrid Journal   (Followers: 11, SJR: 0.359, CiteScore: 1)
Acoustics Australia     Hybrid Journal   (SJR: 0.232, CiteScore: 1)
Acta Analytica     Hybrid Journal   (Followers: 7, SJR: 0.367, CiteScore: 0)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1, SJR: 0.675, CiteScore: 1)
Acta Biotheoretica     Hybrid Journal   (Followers: 4, SJR: 0.284, CiteScore: 1)
Acta Diabetologica     Hybrid Journal   (Followers: 18, SJR: 1.587, CiteScore: 3)
Acta Endoscopica     Hybrid Journal   (Followers: 1)
acta ethologica     Hybrid Journal   (Followers: 4, SJR: 0.769, CiteScore: 1)
Acta Geochimica     Hybrid Journal   (Followers: 7, SJR: 0.24, CiteScore: 1)
Acta Geodaetica et Geophysica     Hybrid Journal   (Followers: 2, SJR: 0.305, CiteScore: 1)
Acta Geophysica     Hybrid Journal   (Followers: 10, SJR: 0.312, CiteScore: 1)
Acta Geotechnica     Hybrid Journal   (Followers: 7, SJR: 1.588, CiteScore: 3)
Acta Informatica     Hybrid Journal   (Followers: 5, SJR: 0.517, CiteScore: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12, SJR: 7.066, CiteScore: 3)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2, SJR: 0.452, CiteScore: 1)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6, SJR: 0.379, CiteScore: 1)
Acta Mathematica Vietnamica     Hybrid Journal   (SJR: 0.27, CiteScore: 0)
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal   (SJR: 0.208, CiteScore: 0)
Acta Mechanica     Hybrid Journal   (Followers: 21, SJR: 1.04, CiteScore: 2)
Acta Mechanica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.607, CiteScore: 2)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 7, SJR: 0.576, CiteScore: 2)
Acta Meteorologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.638, CiteScore: 1)
Acta Neurochirurgica     Hybrid Journal   (Followers: 6, SJR: 0.822, CiteScore: 2)
Acta Neurologica Belgica     Hybrid Journal   (Followers: 1, SJR: 0.376, CiteScore: 1)
Acta Neuropathologica     Hybrid Journal   (Followers: 4, SJR: 7.589, CiteScore: 12)
Acta Oceanologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.334, CiteScore: 1)
Acta Physiologiae Plantarum     Hybrid Journal   (Followers: 2, SJR: 0.574, CiteScore: 2)
Acta Politica     Hybrid Journal   (Followers: 15, SJR: 0.605, CiteScore: 1)
Activitas Nervosa Superior     Hybrid Journal   (SJR: 0.147, CiteScore: 0)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 8, SJR: 0.103, CiteScore: 0)
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 23, SJR: 0.72, CiteScore: 2)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 9)
Administration and Policy in Mental Health and Mental Health Services Research     Partially Free   (Followers: 16, SJR: 1.005, CiteScore: 2)
Adsorption     Hybrid Journal   (Followers: 4, SJR: 0.703, CiteScore: 2)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4, SJR: 0.698, CiteScore: 1)
Advances in Atmospheric Sciences     Hybrid Journal   (Followers: 37, SJR: 0.956, CiteScore: 2)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 19, SJR: 0.812, CiteScore: 1)
Advances in Contraception     Hybrid Journal   (Followers: 3)
Advances in Data Analysis and Classification     Hybrid Journal   (Followers: 55, SJR: 1.09, CiteScore: 1)
Advances in Gerontology     Partially Free   (Followers: 8, SJR: 0.144, CiteScore: 0)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 29, SJR: 1.64, CiteScore: 2)
Advances in Manufacturing     Hybrid Journal   (Followers: 4, SJR: 0.475, CiteScore: 2)
Advances in Polymer Science     Hybrid Journal   (Followers: 45, SJR: 1.04, CiteScore: 3)
Advances in Therapy     Hybrid Journal   (Followers: 5, SJR: 1.075, CiteScore: 3)
Aegean Review of the Law of the Sea and Maritime Law     Hybrid Journal   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2, SJR: 0.517, CiteScore: 1)
Aerobiologia     Hybrid Journal   (Followers: 3, SJR: 0.673, CiteScore: 2)
Aesthetic Plastic Surgery     Hybrid Journal   (Followers: 9, SJR: 0.825, CiteScore: 1)
African Archaeological Review     Hybrid Journal   (Followers: 18, SJR: 0.862, CiteScore: 1)
Afrika Matematika     Hybrid Journal   (Followers: 1, SJR: 0.235, CiteScore: 0)
AGE     Hybrid Journal   (Followers: 7)
Ageing Intl.     Hybrid Journal   (Followers: 7, SJR: 0.39, CiteScore: 1)
Aggiornamenti CIO     Hybrid Journal   (Followers: 1)
Aging Clinical and Experimental Research     Hybrid Journal   (Followers: 3, SJR: 0.67, CiteScore: 2)
Agricultural Research     Hybrid Journal   (Followers: 6, SJR: 0.276, CiteScore: 1)
Agriculture and Human Values     Hybrid Journal   (Followers: 14, SJR: 1.173, CiteScore: 3)
Agroforestry Systems     Hybrid Journal   (Followers: 20, SJR: 0.663, CiteScore: 1)
Agronomy for Sustainable Development     Hybrid Journal   (Followers: 12, SJR: 1.864, CiteScore: 6)
AI & Society     Hybrid Journal   (Followers: 8, SJR: 0.227, CiteScore: 1)
AIDS and Behavior     Hybrid Journal   (Followers: 14, SJR: 1.792, CiteScore: 3)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 4, SJR: 0.862, CiteScore: 3)
Akupunktur & Aurikulomedizin     Full-text available via subscription   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 6, SJR: 0.531, CiteScore: 0)
Algebra Universalis     Hybrid Journal   (Followers: 2, SJR: 0.583, CiteScore: 1)
Algebras and Representation Theory     Hybrid Journal   (Followers: 1, SJR: 1.095, CiteScore: 1)
Algorithmica     Hybrid Journal   (Followers: 9, SJR: 0.56, CiteScore: 1)
Allergo J.     Full-text available via subscription   (Followers: 1, SJR: 0.234, CiteScore: 0)
Allergo J. Intl.     Hybrid Journal   (Followers: 2)
Alpine Botany     Hybrid Journal   (Followers: 5, SJR: 1.11, CiteScore: 3)
ALTEX : Alternatives to Animal Experimentation     Open Access   (Followers: 3)
AMBIO     Hybrid Journal   (Followers: 10, SJR: 1.569, CiteScore: 4)
American J. of Cardiovascular Drugs     Hybrid Journal   (Followers: 16, SJR: 0.951, CiteScore: 3)
American J. of Community Psychology     Hybrid Journal   (Followers: 29, SJR: 1.329, CiteScore: 2)
American J. of Criminal Justice     Hybrid Journal   (Followers: 8, SJR: 0.772, CiteScore: 1)
American J. of Cultural Sociology     Hybrid Journal   (Followers: 16, SJR: 0.46, CiteScore: 1)
American J. of Dance Therapy     Hybrid Journal   (Followers: 4, SJR: 0.181, CiteScore: 0)
American J. of Potato Research     Hybrid Journal   (Followers: 2, SJR: 0.611, CiteScore: 1)
American J. of Psychoanalysis     Hybrid Journal   (Followers: 21, SJR: 0.314, CiteScore: 0)
American Sociologist     Hybrid Journal   (Followers: 13, SJR: 0.35, CiteScore: 0)
Amino Acids     Hybrid Journal   (Followers: 8, SJR: 1.135, CiteScore: 3)
AMS Review     Partially Free   (Followers: 4)
Analog Integrated Circuits and Signal Processing     Hybrid Journal   (Followers: 7, SJR: 0.211, CiteScore: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 5, SJR: 0.536, CiteScore: 1)
Analysis in Theory and Applications     Hybrid Journal   (Followers: 1)
Analysis of Verbal Behavior     Hybrid Journal   (Followers: 5)
Analytical and Bioanalytical Chemistry     Hybrid Journal   (Followers: 31, SJR: 0.978, CiteScore: 3)
Anatomical Science Intl.     Hybrid Journal   (Followers: 3, SJR: 0.367, CiteScore: 1)
Angewandte Schmerztherapie und Palliativmedizin     Hybrid Journal  
Angiogenesis     Hybrid Journal   (Followers: 3, SJR: 2.177, CiteScore: 5)
Animal Cognition     Hybrid Journal   (Followers: 19, SJR: 1.389, CiteScore: 3)
Annales françaises de médecine d'urgence     Hybrid Journal   (Followers: 1, SJR: 0.192, CiteScore: 0)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3, SJR: 1.097, CiteScore: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4, SJR: 0.438, CiteScore: 0)
Annali dell'Universita di Ferrara     Hybrid Journal   (SJR: 0.429, CiteScore: 0)
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1, SJR: 1.197, CiteScore: 1)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18, SJR: 1.042, CiteScore: 3)
Annals of Combinatorics     Hybrid Journal   (Followers: 4, SJR: 0.932, CiteScore: 1)
Annals of Data Science     Hybrid Journal   (Followers: 12)
Annals of Dyslexia     Hybrid Journal   (Followers: 10, SJR: 0.85, CiteScore: 2)
Annals of Finance     Hybrid Journal   (Followers: 30, SJR: 0.579, CiteScore: 1)
Annals of Forest Science     Hybrid Journal   (Followers: 7, SJR: 0.986, CiteScore: 2)
Annals of Global Analysis and Geometry     Hybrid Journal   (Followers: 1, SJR: 1.228, CiteScore: 1)
Annals of Hematology     Hybrid Journal   (Followers: 15, SJR: 1.043, CiteScore: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 13, SJR: 0.413, CiteScore: 1)
Annals of Microbiology     Hybrid Journal   (Followers: 11, SJR: 0.479, CiteScore: 2)
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 4, SJR: 0.687, CiteScore: 2)
Annals of Operations Research     Hybrid Journal   (Followers: 10, SJR: 0.943, CiteScore: 2)
Annals of Ophthalmology     Hybrid Journal   (Followers: 12)
Annals of Regional Science     Hybrid Journal   (Followers: 7, SJR: 0.614, CiteScore: 1)
Annals of Software Engineering     Hybrid Journal   (Followers: 13)
Annals of Solid and Structural Mechanics     Hybrid Journal   (Followers: 9, SJR: 0.239, CiteScore: 1)
Annals of Surgical Oncology     Hybrid Journal   (Followers: 13, SJR: 1.986, CiteScore: 4)
Annals of Telecommunications     Hybrid Journal   (Followers: 9, SJR: 0.223, CiteScore: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1, SJR: 1.495, CiteScore: 1)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5, SJR: 0.834, CiteScore: 2)
Apidologie     Hybrid Journal   (Followers: 4, SJR: 1.22, CiteScore: 3)
APOPTOSIS     Hybrid Journal   (Followers: 8, SJR: 1.424, CiteScore: 4)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2, SJR: 0.294, CiteScore: 1)
Applications of Mathematics     Hybrid Journal   (Followers: 2, SJR: 0.602, CiteScore: 1)
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 43, SJR: 0.571, CiteScore: 2)
Applied Biochemistry and Microbiology     Hybrid Journal   (Followers: 17, SJR: 0.21, CiteScore: 1)
Applied Cancer Research     Open Access  
Applied Categorical Structures     Hybrid Journal   (Followers: 2, SJR: 0.49, CiteScore: 0)
Applied Composite Materials     Hybrid Journal   (Followers: 49, SJR: 0.58, CiteScore: 2)
Applied Entomology and Zoology     Partially Free   (Followers: 4, SJR: 0.422, CiteScore: 1)
Applied Geomatics     Hybrid Journal   (Followers: 3, SJR: 0.733, CiteScore: 3)
Applied Geophysics     Hybrid Journal   (Followers: 8, SJR: 0.488, CiteScore: 1)
Applied Intelligence     Hybrid Journal   (Followers: 12, SJR: 0.6, CiteScore: 2)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4, SJR: 0.319, CiteScore: 1)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 9, SJR: 0.886, CiteScore: 1)
Applied Mathematics - A J. of Chinese Universities     Hybrid Journal   (SJR: 0.17, CiteScore: 0)
Applied Mathematics and Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.461, CiteScore: 1)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 65, SJR: 1.182, CiteScore: 4)
Applied Physics A     Hybrid Journal   (Followers: 10, SJR: 0.481, CiteScore: 2)
Applied Physics B: Lasers and Optics     Hybrid Journal   (Followers: 24, SJR: 0.74, CiteScore: 2)
Applied Psychophysiology and Biofeedback     Hybrid Journal   (Followers: 8, SJR: 0.519, CiteScore: 2)
Applied Research in Quality of Life     Hybrid Journal   (Followers: 12, SJR: 0.316, CiteScore: 1)
Applied Solar Energy     Hybrid Journal   (Followers: 18, SJR: 0.225, CiteScore: 0)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5, SJR: 0.542, CiteScore: 1)
Aquaculture Intl.     Hybrid Journal   (Followers: 24, SJR: 0.591, CiteScore: 2)
Aquarium Sciences and Conservation     Hybrid Journal   (Followers: 2)
Aquatic Ecology     Hybrid Journal   (Followers: 34, SJR: 0.656, CiteScore: 2)
Aquatic Geochemistry     Hybrid Journal   (Followers: 4, SJR: 0.591, CiteScore: 1)
Aquatic Sciences     Hybrid Journal   (Followers: 13, SJR: 1.109, CiteScore: 3)
Arabian J. for Science and Engineering     Hybrid Journal   (Followers: 5, SJR: 0.303, CiteScore: 1)
Arabian J. of Geosciences     Hybrid Journal   (Followers: 2, SJR: 0.319, CiteScore: 1)
Archaeological and Anthropological Sciences     Hybrid Journal   (Followers: 21, SJR: 1.052, CiteScore: 2)
Archaeologies     Hybrid Journal   (Followers: 12, SJR: 0.224, CiteScore: 0)
Archiv der Mathematik     Hybrid Journal   (Followers: 1, SJR: 0.725, CiteScore: 1)
Archival Science     Hybrid Journal   (Followers: 62, SJR: 0.745, CiteScore: 2)
Archive for History of Exact Sciences     Hybrid Journal   (Followers: 7, SJR: 0.186, CiteScore: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3, SJR: 0.909, CiteScore: 1)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (SJR: 3.93, CiteScore: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.79, CiteScore: 2)
Archives and Museum Informatics     Hybrid Journal   (Followers: 143, SJR: 0.101, CiteScore: 0)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5, SJR: 1.41, CiteScore: 5)
Archives of Dermatological Research     Hybrid Journal   (Followers: 7, SJR: 1.006, CiteScore: 2)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 14, SJR: 0.773, CiteScore: 2)
Archives of Gynecology and Obstetrics     Hybrid Journal   (Followers: 16, SJR: 0.956, CiteScore: 2)
Archives of Microbiology     Hybrid Journal   (Followers: 8, SJR: 0.644, CiteScore: 2)
Archives of Orthopaedic and Trauma Surgery     Hybrid Journal   (Followers: 8, SJR: 1.146, CiteScore: 2)
Archives of Osteoporosis     Hybrid Journal   (Followers: 2, SJR: 0.71, CiteScore: 2)
Archives of Sexual Behavior     Hybrid Journal   (Followers: 10, SJR: 1.493, CiteScore: 3)
Archives of Toxicology     Hybrid Journal   (Followers: 17, SJR: 1.541, CiteScore: 5)
Archives of Virology     Hybrid Journal   (Followers: 5, SJR: 0.973, CiteScore: 2)
Archives of Women's Mental Health     Hybrid Journal   (Followers: 14, SJR: 1.274, CiteScore: 3)
Archivio di Ortopedia e Reumatologia     Hybrid Journal  
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2, SJR: 0.946, CiteScore: 3)
ArgoSpine News & J.     Hybrid Journal  
Argumentation     Hybrid Journal   (Followers: 6, SJR: 0.349, CiteScore: 1)
Arid Ecosystems     Hybrid Journal   (Followers: 2, SJR: 0.2, CiteScore: 0)
Arkiv för Matematik     Hybrid Journal   (Followers: 1, SJR: 0.766, CiteScore: 1)
Arnold Mathematical J.     Hybrid Journal   (Followers: 1, SJR: 0.355, CiteScore: 0)
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 2, SJR: 0.839, CiteScore: 2)
Arthroskopie     Hybrid Journal   (Followers: 1, SJR: 0.131, CiteScore: 0)
Artificial Intelligence and Law     Hybrid Journal   (Followers: 11, SJR: 0.937, CiteScore: 2)
Artificial Intelligence Review     Hybrid Journal   (Followers: 16, SJR: 0.833, CiteScore: 4)
Artificial Life and Robotics     Hybrid Journal   (Followers: 9, SJR: 0.226, CiteScore: 0)
Asia Europe J.     Hybrid Journal   (Followers: 5, SJR: 0.504, CiteScore: 1)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12, SJR: 0.479, CiteScore: 1)
Asia Pacific J. of Management     Hybrid Journal   (Followers: 16, SJR: 1.185, CiteScore: 2)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 12, SJR: 0.353, CiteScore: 1)
Asia-Pacific Financial Markets     Hybrid Journal   (Followers: 2, SJR: 0.187, CiteScore: 0)
Asia-Pacific J. of Atmospheric Sciences     Hybrid Journal   (Followers: 19, SJR: 0.855, CiteScore: 1)
Asian Business & Management     Hybrid Journal   (Followers: 9, SJR: 0.378, CiteScore: 1)
Asian J. of Business Ethics     Hybrid Journal   (Followers: 9)
Asian J. of Criminology     Hybrid Journal   (Followers: 6, SJR: 0.543, CiteScore: 1)
AStA Advances in Statistical Analysis     Hybrid Journal   (Followers: 3, SJR: 0.548, CiteScore: 1)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5, SJR: 0.183, CiteScore: 0)
ästhetische dermatologie & kosmetologie     Full-text available via subscription  

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Journal Cover
Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement
Journal Prestige (SJR): 0.316
Citation Impact (citeScore): 1
Number of Followers: 27  
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0949-1775 - ISSN (Online) 1432-0517
Published by Springer-Verlag Homepage  [2351 journals]
  • Evaluation of implementation of good quality management practices related
           to the support processes in the laboratories of Moroccan faculties of
           sciences and techniques
    • Authors: Meriem Outaki; Ebrahim Kerak
      Pages: 257 - 267
      Abstract: The evaluation practices in the higher education in Morocco constitute a constitutional and legal requirement and also respond to the requirements of the national and international environment in perpetual evolution. To identify the level of application of good quality management practices related to the scientific research in Morocco, a questionnaire was administered to the research laboratories managers of the faculties of sciences and techniques on a national scale with a percentage of answer of 33 %. This paper concerns the evaluation of the implementation of theses good practices related to the support processes such as the management of material, human and informational resources. The results of this study showed the dissatisfaction of the majority of laboratories managers with regard to their availability. Besides, a minority of the laboratories respect practices related to the control of the function metrology and to the storage and the traceability of reagents. More than two-thirds managers asserted that their research teams are established on the basis of the affinities of the thematic of research of the researchers and are convinced of the homogeneity of the composition of the laboratory teams. This study emphasizes the necessity of increasing investment in the domain of scientific research to improve the availability of the resources. It is also necessary to sensitize the laboratory staff to the importance of the implementation and control of the metrology function to assure reliability of the research results.
      PubDate: 2018-10-01
      DOI: 10.1007/s00769-018-1336-6
      Issue No: Vol. 23, No. 5 (2018)
  • Correction to: Measurement uncertainty: requirements set in the
           accreditation standards
    • Authors: Kyriacos C. Tsimillis
      Pages: 253 - 253
      Abstract: Unfortunately, the references 12 and 13 were incorrectly published in the original publication. The correct references are:
      PubDate: 2018-08-01
      DOI: 10.1007/s00769-018-1323-y
      Issue No: Vol. 23, No. 4 (2018)
  • Cooperation in publicly funded reference material production
    • Authors: Håkan Emteborg; Doris Florian; Steven Choquette; Stephen L. R. Ellison; Maria Fernandes-Whaley; Lindsey Mackay; Pearse McCarron; Ulrich Panne; Sylvia G. Sander; Sook-Kyung Kim; Andrea Held; Thomas Linsinger; Stefanie Trapmann
      PubDate: 2018-10-12
      DOI: 10.1007/s00769-018-1349-1
  • Provision of proficiency testing for histamine mass fraction in canned
           tuna to improve the capability of chemical laboratories in the Philippines
    • Authors: Benilda S. Ebarvia; Aaron Dacuya; Sharlene R. Cabanilla; Natividad R. Mamplata
      Abstract: In this work, two reference materials (RMs) for mass fraction of histamine in canned tuna were developed to address the need of local testing laboratories for matrix RMs and a PT scheme for histamine. A validated method using HPLC with fluorescence detector (340 nm for excitation and 445 nm for emission) was applied with post-column derivatization for the RM’s homogeneity and stability studies. Acceptable results were obtained after statistical evaluation of homogeneity and stability according to IUPAC Harmonized Protocol and ISO Guide 35, respectively. Two PT exercises for histamine determination based on ISO/IEC 17043 were organized in 2014 and 2015 with the assigned values of 148 and 65 mg/kg, respectively. These reference values were obtained using exact matching liquid chromatography–isotope dilution mass spectrometry (LC–IDMS) with gravimetric sample preparation. The corresponding uncertainty of the reference value was obtained by ISO GUM approach where the characterization of the sample gave the highest contribution (41 %). The satisfactory z-score performance evaluated from the 12 laboratories was 50 % and 58.3 % in the first and second PT round, respectively. Most of the laboratories used AOAC Official Method 977.13 but not all conducted method validation. The 50 % decrease in unsatisfactory results in the second PT round is a significant improvement in the local laboratory performance for histamine analysis. However, the provision of more PT schemes and the increased use of CRMs in the future are still needed by these laboratories for external quality assurance and method validation to enhance the present capability.
      PubDate: 2018-10-09
      DOI: 10.1007/s00769-018-1347-3
  • Innovative reference material for improving the quality control in the
           sucroenergetic sector
    • Authors: Maria I. V. Martínez; Rolf Zeisler; Elisabete A. De Nadai Fernandes; Márcio A. Bacchi
      Abstract: Analytical techniques in the sucroenergetic sector can now for the first time be supported by an innovative matrix-matching reference material produced from sugarcane leaves. This will further enhance the validity of the measurement results and contribute significantly to the quality assurance of plant nutrition analysis. The candidate reference material obtained had a low residual moisture and appropriate particle size. Neutron activation analysis was used to determine the mass fraction of Al, Br, Ca, Cl, Ce, Co, Cs, Cu, Fe, Hf, K, La, Mg, Mn, Mo, Na, P, Rb, Sb, Sc, Sm, Sr, Th, V and Zn, and the Kjeldahl method for N. Statistical techniques were applied to evaluate minimum sample mass and within-bottle homogeneity (ANOVA, Tukey test and PCA) and between-bottles homogeneity (ANOVA). It is demonstrated in this paper that the material is homogeneous using 50 mg mass sample for most chemical elements. However, sample masses of 200 mg or greater are required for Co, Na, Sb and V.
      PubDate: 2018-10-03
      DOI: 10.1007/s00769-018-1348-2
  • Toward the determination of estrogenic compounds in the framework of EU
           watch list: validation and implementation of a two-step solid phase
           extraction–liquid phase chromatography coupled to tandem mass
           spectrometry method
    • Authors: Sophie Lardy-Fontan; Véronique Le Diouron; Carine Fallot; Sophie Vaslin-Reimann; Béatrice Lalere
      Abstract: In this paper, development and optimization of a new method for determination of the three hormones (estrone, 17-β-estradiol and 17-α-ethinylestradiol) of the Watch list were described. The validated method relies on isotope dilution—two-step solid phase extraction–liquid phase chromatography mass spectrometry method. The measurement procedure validation has been performed in real matrices, including matrix with high suspended particulate matter and high organic carbon contents, to demonstrate its fitness for purpose. Method performances were in agreement with the requirements of the decision 2015/495/EU (maximal acceptable method detection limit and whole-water analysis). Limits of quantification of the method were of 0.4 ng L−1 for estrone and 17-β-estradiol and 0.1 ng L−1 for 17-α-ethinylestradiol. Expanded uncertainties (k = 2) at limit of quantification were equal to 35 % for estrone and 17-β-estradiol and 50 % for 17-α-ethinylestradiol. The method was successfully implemented to monitor French inland surface waters contamination. The survey reveals a chronic state of contamination by estrone (96 % quantification rate) and significant one by 17-β-estradiol and 17-α-ethinylestradiol (15 % quantification rate). Maximum measured concentrations are above predicted no-effect concentrations, indicating potential risk toward the environment.
      PubDate: 2018-09-26
      DOI: 10.1007/s00769-018-1346-4
  • Congresses, conferences, workshops and courses
    • PubDate: 2018-09-17
      DOI: 10.1007/s00769-018-1345-5
  • Results of an unannounced proficiency test for the quantification of
           hepatitis C virus (HCV) RNA in Shanghai, China
    • Authors: Xueliang Wang; Fen Liu; Lingli Jiang; Yun Bao; Yixiao Yang; Yanqun Xiao; Hualiang Wang
      Abstract: Sensitive and accurate hepatitis C virus (HCV) RNA quantification is essential for the management of chronic hepatitis C therapy. Currently, in Shanghai, China, many laboratories offer to quantify the HCV RNA level using various reverse transcription-polymerase chain reaction (rRT-PCR) assays, but the degree of proficiency may vary between them. The objective of this study was to realistically evaluate the performance of clinical laboratories for HCV RNA quantification by a new way of proficiency test program (unannounced inspection). Inactivated chimeric influenza viral particles (CIVP) encapsulating specific RNA sequences of HCV were prepared as positive samples. The sample panel, which consisted of two negative and eight positive samples with different concentrations of CIVP (25 IU/ml to 2.5×106 IU/ml), was distributed to 40 clinical laboratories for HCV RNA quantification. The results reported by the participating laboratories were compared and scored. It was found that 75 % (30/40) of the laboratories obtained an acceptable or better performance score, while the other 10 laboratories had room for improvement. Reported results for individual samples ranged from 125 IU/ml (minimum) to 6.0×104 IU/ml (maximum). The greatest variation was observed for samples with a relatively low concentration. Interlaboratory variability among replicate samples was significantly greater than intralaboratory variability (p < 0.05). Our results demonstrate that there is room for some laboratories to improve their performance in the quantification of HCV RNA in Shanghai. Additionally, this study underlines the importance of unannounced inspection for realistically monitoring the quality of diagnostic laboratories.
      PubDate: 2018-08-28
      DOI: 10.1007/s00769-018-1341-9
  • Preparation and characterization of in-house reference material for four
           organochlorine pesticides in tea matrix
    • Authors: Jie Feng; Jingguang Fan; Yansong Zhang; Haipeng Ma
      Abstract: Production and evaluation of in-house reference material for incurred residues of four organochlorine pesticides, named hexachlorobenzene, dicofol, pp′-DDE, and op′-DDT, in tea sample has been performed. Raw materials (tea samples) were confirmed to contain certain levels of incurred organochlorine pesticide residues by a validated gas chromatography–mass spectrometry method. After the materials had been milled and thoroughly mixed, 400 bottles each having 20 g sample were prepared and their homogeneity (within-bottle and bottle-to-bottle variation) was found to be sufficient. The materials demonstrated satisfying stability of four organochlorine pesticides in both short-term (30 days) and long-term (12 months) stability studies. The reference values were characterized using an accurate isotope dilution gas chromatography–mass spectrometry method. The mass fraction (± expanded uncertainty) of hexachlorobenzene, dicofol, pp′-DDE, and op′-DDT in the reference material was (2.1 ± 0.2) mg kg−1, (513.3 ± 31.3) mg kg−1, (8.3 ± 0.6) mg kg−1, and (14.9 ± 1.0) mg kg−1, respectively. The reference materials have been distributed for use in laboratory quality assurance.
      PubDate: 2018-08-25
      DOI: 10.1007/s00769-018-1328-6
  • Microbiology proficiency testing schemes in wine
    • Authors: Caterina Mazzoni; Abdelkader Boubetra; Sandrine Nguyen; Anne Tirard
      Abstract: The number of laboratories performing microbiological analyses of wines has gradually increased in recent years over the world. However, the lack of regular proficiency testing schemes (PTS) in this field is an obstacle for the monitoring of the laboratory performance. The complexity of wine matrix in terms of bacterial ecology and biochemical aspects is a factor to be taken into account in developing a PTS, especially during the preparation of stable and homogeneous samples. Since February 2016, BIPEA set up tests on Brettanomyces analyses in wine, gathering more than 20 laboratories around the world. For each test, the statistical treatment of the data is performed according to ISO 13528. The assigned and tolerance values are calculated from the participants’ data, and the performances of the laboratories are evaluated individually and collectively according to ISO/IEC 17043 and ISO/DIS 22117. The results obtained in these first tests are satisfactory with a progressive improvement of the dispersion of participants’ results over the series. These data confirm that participating in a PTS is particularly important for the laboratories in order to assess and improve analytical performances and to obtain recognition of their analytical procedures by the accreditation bodies according to ISO/IEC 17025.
      PubDate: 2018-08-25
      DOI: 10.1007/s00769-018-1342-8
  • Proficiency testing in analytical chemistry, microbiology and laboratory
           medicine: discussions on current practice and future directions
    • Authors: Brian Brookman; Owen Butler; Laura Ciaralli; Monika Horsky; Caroline Laurent; Tracey Noblett; Ulf Örnemark; Marina Patriarca; Lorens P. Sibbesen; Ulla Tiikkainen; Kees van Putten; Piotr Robouch
      Abstract: A summary of the working group discussions on proficiency testing (PT) and external quality assessment (EQA) held at the Eurachem Workshop, Portorož, Slovenia, 9–12 October 2017, is provided. The working groups covered a range of issues concerned with current practice and future directions; the importance of interpretative PT/EQA schemes; changes to PT/EQA schemes in developing countries over the last 10 years; implementing ISO/IEC 17043 for sampling PT/EQA schemes; traditional versus virtual PT/EQA items; experience of the implementation of EA-4/18; and use and treatment of measurement uncertainty in PT/EQA schemes. Delegates from fifty-two countries attended the workshop, and this diversity of different backgrounds was represented on each of the working groups to capture a range of views and experience from a number of different measurement sectors. Working group representatives included PT/EQA providers, participants in PT/EQA schemes, end users of PT/EQA results such as accreditation bodies and regulatory authorities, national measurement institutes, laboratory associations, suppliers, universities and independent consultants from countries around the world.
      PubDate: 2018-08-25
      DOI: 10.1007/s00769-018-1343-7
  • Ruggedness testing of an analytical method for pesticide residues in
    • Authors: Britt Maestroni; Alan R. Vazquez; Valeria Avossa; Peter Goos; Veronica Cesio; Horacio Heinzen; Joerg Riener; Andrew Cannavan
      Abstract: The best demonstration of the ruggedness of a method is monitoring its performance on an ongoing basis as part of the analytical quality control applied in the laboratory. However, an initial demonstration of the ruggedness is often performed as one aspect of the method validation, to give confidence that the method should perform well under normal variations in conditions in routine application. This initial ruggedness testing is typically performed using either multiple replicate analyses or application of design of experiments (DoEs) which minimizes the number of analyses, time and effort required to detect influences on the measurement results. Two DoEs were applied for ruggedness testing for a modified QuEChERS multiresidue method for the detection of pesticide residues in potato by GC–MS/MS. Seven experimental factors were studied using an eight-run Plackett–Burman design replicated three times and an augmented definitive screening design with 34 runs. The relative effectiveness of the two approaches is discussed, in terms of their statistical significance, their cost-effectiveness and the richness of information they provide on the effects of the parameters investigated and the actual robustness of the method being tested.
      PubDate: 2018-08-24
      DOI: 10.1007/s00769-018-1335-7
  • Acquisition of stability data for pesticides in water sample through
           proficiency tests
    • Authors: Eric Ziegler; Anne Tirard; Abdelkader Boubetra; Marie de Bort
      Abstract: In the framework of a proficiency test for multiresidue determination, three water samples, coming from the same batch, were sent to each of the 25 participants. They were asked to analyze the first one 2 days after the production (D + 2), the second one at D + 4 and the last one at D + 9. D + 2 was selected as the first date of analysis in order to allow all the participants to receive their samples. Prior to the analysis, the samples were stored at 4 °C. The samples were distributed in 1-l bottle from a batch spiked with more than 100 pesticides. The spiking concentrations ranged from 120 ng/l to 227 ng/l. Apart from the usual proficiency evaluation with assigned values and z-scores, comparisons between the results at the different dates of analysis were made. Most of the substances were found to be stable during the considered period in the conditions of the test, but some profiles of evolution were highlighted for some others.
      PubDate: 2018-08-16
      DOI: 10.1007/s00769-018-1339-3
  • Application of post-column reaction GC for accurate and direct
           determination of musty odor substances in standard solution
    • Authors: Yuko Kitamaki; Naoki Saito; Masahiko Numata; Toshihide Ihara
      Abstract: By using post-column reaction GC, a method for accurate and direct characterization of musty odor substances (2-methylisoborneol and geosmin) in a candidate standard solution has been developed. Because the GC system gives a response depending on the number of carbon atoms constituting the organic compound by combustion and conversion to methane, naphthalene and diethyl phthalate, purity of which had been accurately assessed, were used as reference materials for calibration. To verify the method, concentrations of 2-methylisoborneol and geosmin in the sample determined by the method were compared with the concentrations calculated based on gravimetric mixing that is one of the general methods for the characterization of the organic standard solutions. The analytical results of each analyte obtained by the two methods agreed within a deviation of about 0.5 % or less.
      PubDate: 2018-08-06
      DOI: 10.1007/s00769-018-1338-4
  • Congresses, conferences, workshops and courses
    • PubDate: 2018-07-24
      DOI: 10.1007/s00769-018-1340-x
  • Validation of an in-house measurement procedure for determination of
           selected priority hazardous substances in water and estimation of
           measurement uncertainty
    • Authors: Marijana Kragulj Isakovski; Jelena Molnar Jazić; Snežana Maletić; Aleksandra Tubić; Jasmina Agbaba; Jelena Tričković; Božo Dalmacija
      Abstract: This study investigates measurement procedure validation for the determination of hexachlorobenzene, pentachlorobenzene and trifluralin as priority hazardous pesticides in water with suspended solids  < 12 mg/L by liquid–liquid extraction with hexane and gas chromatography with electron capture detector analysis. Two water matrices were used: synthetic matrix and a natural matrix—Danube surface water. Limit of detection was in the range 2.2 ng/L–3.9 ng/L. Trueness expressed as recovery was determined at pesticide concentrations of 20 ng/L and 50 ng/L in both water matrices. The intermediate precision was determined as relative standard deviations (RSD) and represents an agreement between replicates. Trueness was 72 %–121 % with RSD < 20 %. Expanded uncertainty of measurement was similar for all compounds (33.3 %–37.5 %) with a 95 % confidence level, for coverage factor k = 2. The validity of the measurement procedure was confirmed by participation in a PT Scheme with satisfactory z -score smaller than 2. Based on these results, it can be concluded that this low-cost measurement procedure is fit for the intended use measurements.
      PubDate: 2018-07-07
      DOI: 10.1007/s00769-018-1334-8
  • A fitness for purpose approach to validation and verification of
           analytical measurements
    • Authors: M. Alvarez-Prieto; J. Jiménez-Chacón
      Abstract: Validation (and in some extension verification) are concepts often applied to analytical procedures (or methods). The new edition of ISO/IEC 17025 clearly distinguishes between them. However, the established practice in analytical chemistry is not in harmony with the definitions given in the International Vocabulary of Metrology. It is stressed that both concepts should be applied to the analytical process (i.e., the measurement) instead of to the written analytical procedure (or method). Formal new definitions of basic and complementary metrological characteristics are given in order to properly understand the concepts of metrological requirements (MRs), verification and validation, and how they should be applied in practice. Also, validation is conceptually linked to the intended use of results, that is, to make the correct decision with a given high probability. To understand the rationale behind these concepts, a logical flow diagram is discussed. The way to compare basic metrological characteristics and the previously obtained ones for verification, as well as how to compare them with MRs for validation is discussed. Conversion of product characteristics into MRs plays an important role in this latter case. Some general guidelines on extension (and depth) of verification and validation are offered. Some of the discussed ideas could be applied in other branches of metrology.
      PubDate: 2018-07-03
      DOI: 10.1007/s00769-018-1331-y
  • Influence of probability distribution in measurement uncertainty of
           plane-strain fracture toughness test
    • Authors: Daniel Antonio Kapper Fabricio; Carla Schwengber ten Caten; Lisiane Trevisan; Afonso Reguly
      Abstract: The evaluation of measurement uncertainty by testing laboratories has a direct impact on the interpretation of the results. In several cases, it is recommended to determine the measurement uncertainty by the Monte Carlo method (MCM), which considers the propagation of distributions rather than the propagation of uncertainty. Measurement uncertainty of plane-strain fracture toughness KIC test was evaluated through the MCM and an examination of the influence of the probability distribution on the uncertainty values was performed through analysis of variance (ANOVA). In addition, results were compared to those obtained by the Guide to the Expression of Uncertainty in Measurement (GUM). Results demonstrate the importance of using the Monte Carlo method for the evaluation of measurement uncertainty and confirm that the probability distribution of input data has a significant influence on the expanded uncertainty values obtained for the plane-strain fracture toughness test.
      PubDate: 2018-07-02
      DOI: 10.1007/s00769-018-1326-8
  • Characterisation of folic acid by mass balance versus quantitative NMR
    • Authors: Andrea Lodi; Cees-Jan Nap; Silvia Metzger-Maurer; Christelle Schwartzenberger
      Abstract: Two approaches were used to determine the mass fraction of a sample of folic acid, one indirect (mass balance) where the components other than folic acid were measured, and one direct, using quantitative nuclear magnetic resonance (qNMR). The procedures used for the mass balance were essentially those described in the European Pharmacopoeia monograph for folic acid. qNMR is a technique for quantifying the main component within an organic compound (Quantitative NMR (qNMR)—BIPM in, Santosh and Raja in Trends Anal Chem 35:5–26, 2012), whereas mass balance quantifies its minor components. The results obtained with the two approaches are independent. In this study, their joint application generated information that was used in a more than complementary fashion. The mass balance characterisation, in particular the results obtained by liquid chromatography with ultraviolet detection (LC–UV), allowed to improve the accuracy of the qNMR result by subtracting the interfering contribution of a related structure impurity. On the other hand, qNMR enabled concluding that the non-uniform response of UV detection at a single wavelength was not critically biasing the LC–UV results. In the end, the mass fractions obtained by mass balance and qNMR were not that different. It is concluded that mass balance and qNMR may be not only complementary but also synergistic. It was also observed that access to monographs of the European Pharmacopoeia, when available, gives skilled analysts an important tool for improved substance characterisation.
      PubDate: 2018-06-28
      DOI: 10.1007/s00769-018-1327-7
  • Correction to: Motivations, benefits and challenges on ISO/IEC 17025
           accreditation of higher education institution laboratories
    • Authors: Inês Hexsel Grochau; Carla Schwengber ten Caten; Maria Madalena de Camargo Forte
      Abstract: Unfortunately, figure 3 was incorrectly published in the original publication and the correct version is updated here.
      PubDate: 2018-06-18
      DOI: 10.1007/s00769-018-1333-9
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