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International Journal of Low Radiation
Journal Prestige (SJR): 0.115

Number of Followers: 1

Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1477-6545 - ISSN (Online) 1741-9190
Published by Inderscience Publishers

[447 journals]

Radon-thoron and their progeny dosimetry in multi-storeyed malls in Delhi
NCR (India) using plastic track detectors
- Authors: Nitin Gupta, Krishan Kant, Maneesha Garg
 Pages: 255 - 265
 Abstract: Environmental radioactivity due to radon, thoron and their progenies in the ambient air in the multi-storeyed malls situated in Delhi National Capital Region (NCR) including district Faridabad, Haryana (India) was evaluated using LR-115 (type-II) SSNTDs. The average value of activity in different seasons due to radon and thoron varied from 18.45 ± 1.95 Bqm−3 to 45.37 ± 4.69 Bqm−3 and 10.64 ± 0.94 Bqm−3 to 22.91 ± 1.88 Bqm−3 respectively. The collective annual exposure and annual effective dose due to radon and thoron varied from 45.37 × 10−3 WLM to 295.67 × 10−3 WLM with an average value of (159.88 ± 3.66) × 10−3 WLM, and 0.17 mSv to 1.13 mSv with an average value of 0.61 ± 0.01 mSv respectively during the four seasons of the year. Owing to poor ventilation in basement of malls, the annual effective dose is high compared with upper floors of the malls where proper ventilation is provided.
 Keywords: radon; thoron; progeny; radioactivity; detector; multi-storeyed mall
 Citation: International Journal of Low Radiation, Vol. 10, No. 4 (2017) pp. 255 - 265
 PubDate: 2017-10-30T23:20:50-05:00
 DOI: 10.1504/IJLR.2017.087633
 Issue No: Vol. 10, No. 4 (2017)
Evaluation of environmental radioactivity impacts and its associated
radiological hazards with monitoring of radon-222 in rock and sand samples
collected from some mountains and valleys in Sinai Area, Egypt
- Authors: Nitin Gupta, Krishan Kant, Maneesha Garg
 Pages: 266 - 284
 Abstract: Determination of the natural radionuclide contents of soil and rock samples collected from some mountains and valleys in Sinai, Egypt, has been carried out using gamma spectrometric techniques. The total average concentrations of radionuclides 226Ra, 238U, 232Th, and 40K were (51.37, 50.02, 19.34, and 286.66 Bq/kg), respectively. The total average absorbed dose rate in the study areas is found to be 47.08 nGy/h, whereas the indoor and outdoor annual effective dose equivalent has an average value of 0.23 and 0.06 mSv/y respectively. The range of 226Ra activity was found from 11.15 ± 0.96 Bq/kg to 135.85 ± 11.68 Bq/kg. The results of the present study are discussed and compared with internationally recommended values. The concentrations of radon gas in the air were determined as well as the activity concentrations of 222Rn in vegetables. In the present study some mathematical equations models are used to estimate the activity concentrations of 222Rn in the air.
 Keywords: radioactivity concentration; absorbed dose; activity concentrations of 222Rn in the air and soil; gamma spectrometer; external and internal hazard indices; radium equivalent activity
 Citation: International Journal of Low Radiation, Vol. 10, No. 4 (2017) pp. 266 - 284
 PubDate: 2017-10-30T23:20:50-05:00
 DOI: 10.1504/IJLR.2017.087634
 Issue No: Vol. 10, No. 4 (2017)
Natural radioactivity in farm soils and major food crops grown in Ayetoro,
Ogun State, Southwestern Nigeria
- Authors: Shamsideen Kunle Alausa, Omotomilola Oloye Omotosho
 Pages: 285 - 303
 Abstract: Radioactivity data in food and farm soil in sedimentary rocky areas like Ayetoro, Nigeria, are scarce. Maize, cassava and the underneath soil samples were collected from Ayetoro. The 40K, 226Ra and 232Th activity concentrations in the samples were measured with a gamma ray spectrometer. The soil-to-food crop transfer factors, ingestion effective dose rates due to the crops and the outdoor effective dose rates due to soils were evaluated. The mean 40K, 226Ra and 232Th activity concentrations in maize were 160.3 ± 66.5 Bqkg−1, 18.1 ± 7.1 Bqkg−1 and 15.0 ± 8.0 Bqkg−1 respectively and the soils were 671.5 ± 352.9 Bqkg−1, 66.8 ± 25.3 Bqkg−1 and 62.1 ± 27.9 Bqkg−1 for 40K, 226Ra and 232Th respectively. The mean activity concentrations in cassava were 294.6 ± 137.2 Bqkg−1, 28.6 ± 14.9 Bqkg−1 and 18.2 ± 13.0 Bqkg−1 for 40K, 226Ra and 232Th respectively and the soils were 679.5 ± 281.1 Bqkg−1, 66.8 ± 32.7 Bqkg−1 and 49.7 ± 46.9 Bqkg−1 for 40K, 226Ra and 232Th respectively. The results indicated that the activity concentrations, ingestion effective dose and outdoor effective dose are low and no serious radiological health impact is expected.
 Keywords: natural radioactivity; farm soils; food crops; health impact; sedimentary rocks; gamma-ray; activity concentration; transfer factor; effective dose; Abeokuta formation; Ayetoro; Nigeria
 Citation: International Journal of Low Radiation, Vol. 10, No. 4 (2017) pp. 285 - 303
 PubDate: 2017-10-30T23:20:50-05:00
 DOI: 10.1504/IJLR.2017.087689
 Issue No: Vol. 10, No. 4 (2017)
Evaluation of naturally occurring radioactive materials in oilfields of
south east of Libya
- Authors: Usama M. Elghawi, Feisal A. Abutweirat, Taha S. Barka
 Pages: 304 - 313
 Abstract: An investigation was carried out to find out the concentration of NORMs in evaporation ponds sludge in south eastern oilfield of Libya. Activity concentrations of 226Ra, 232Th and 40K in soil generated during oil production operations were determined using a gamma spectroscopy system based on high purity germanium (HPGe) detector. Concentrations ranged from 83 to 1000 Bq kg−1 for 226Ra, 59 to 315 Bq kg−1 for 232Th and 109 to 304 Bq kg−1 for 40K. To evaluate the radiological effects, radium equivalent activity and external hazard are calculated. The magnitude of these results demonstrates the need of these ponds for a special treatment on site to reduce the exposure to a value below 100 μSv/y, by mixing the pond after drying the lagoon with clean soil to reduce the dose rate and minimise the environmental impact of NORM.
 Keywords: NORM; radioactivity; NORM regulations and guidance; oilfield; evaporation ponds; health hazards
 Citation: International Journal of Low Radiation, Vol. 10, No. 4 (2017) pp. 304 - 313
 PubDate: 2017-10-30T23:20:50-05:00
 DOI: 10.1504/IJLR.2017.087690
 Issue No: Vol. 10, No. 4 (2017)
Assessment of DNA damage in lymphocytes of Mamuju (a high background
radiation area) inhabitants using alkaline single cell gel electrophoresis
- Authors: Tur Rahardjo, Wiwin Mailana, Teja Kisnanto, Darlina, Siti Nurhayati, Devita Tetriana, Dwi Ramadhani, Mukh Syaifudin
  Pages: 314 - 323
  Abstract: Mamuju in Indonesia has a highest average dose rate and considered as a high background radiation area (HBRA) in Indonesia. Here in this research a preliminary study to evaluate DNA damage using the alkaline comet assay in inhabitants of Takandeang village, Mamuju, was conducted. Blood samples from 55 healthy donors living in Takandeang village and 22 control samples were obtained and processed into the assay. Results showed that there were insignificant differences of comet tail length (TL) and tail moment (TM) between Takandeang village inhabitants and control samples (p = 0.578, 0.174). Regression analysis revealed that the DNA damage was increased with age in control samples, even though the correlation was not significant (p > 0.05). In contrast a significant negative correlation (p = 0.02) was observed in Takandeang inhabitants. Results found in this research should be validating in a larger study using more samples from Mamuju.
  Keywords: comet assay; DNA damage; high background radiation area; lymphocytes; Mamuju
  Citation: International Journal of Low Radiation, Vol. 10, No. 4 (2017) pp. 314 - 323
  PubDate: 2017-10-30T23:20:50-05:00
  DOI: 10.1504/IJLR.2017.087691
  Issue No: Vol. 10, No. 4 (2017)
Estimation of annual effective dose due to external and internal exposure
in the residents of coastal villages of Kanya Kumari district, Tamil Nadu,
India
- Authors: D. Deva Jayanthi, C.G. Maniyan, S. Perumal
  Pages: 324 - 330
  Abstract: In this paper, annual effective radiation dose received by the residents of coastal villages of Kanya Kumari district of Tamil Nadu, India, is estimated. External exposure and the internal exposure are added to get the annual effective dose. External dose is calculated using TLD and the internal dose is calculated via inhalation and ingestion. Inhalation dose is calculated using SSNTD a passive measuring technique and the ingestion dose is calculated through the intake of water and the food (meals) by the public. For the present study ten coastal villages are selected and all the selected villages come under the natural high background radiation area. Among the study villages the annual effective dose varies from 3.7 mSv to 9.8 mSv.
  Keywords: radiation exposure; ingestion; inhalation; external dose; effective dose
  Citation: International Journal of Low Radiation, Vol. 10, No. 4 (2017) pp. 324 - 330
  PubDate: 2017-10-30T23:20:50-05:00
  DOI: 10.1504/IJLR.2017.087693
  Issue No: Vol. 10, No. 4 (2017)