印度居民食用谷物样品中天然放射性核素的活动浓度和年有效摄入剂量评估

Q4 Medicine

International Journal of Low Radiation Pub Date : 2016-01-29 DOI:10.1504/IJLR.2015.074414

R. Kumari, K. Kant, Maneesha Garg, Rashi Gupta, R. Sonkawade, S. Chakarvarti

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引用次数: 4

摘要

在本研究中，利用伽马能谱法对谷物样品进行了活性浓度和年有效摄入剂量的评估。研究样品中226Ra、238U、232Th和40K的活性变化范围为10.25±0.94 Bq/kg ~ 29.13±0.69 Bq/kg、7.04±0.13 Bq/kg ~ 20.08±1.32 Bq/kg、22.20±2.46 Bq/kg ~ 58.21±1.15 Bq/kg和1158.4±26.05Bq/kg ~ 1962.2±18.17 Bq/kg，平均值分别为20.06±4.82 Bq/kg、13.08±1.31 Bq/kg、41.53±3.77 Bq/kg和1639±75.55 Bq/kg。226Ra、238U、232Th和40K的年有效摄入剂量平均值分别为0.62±0.08 mSv/y、0.07±0.006 mSv/y、1.20±0.11 mSv/y和1.28±0.06 mSv/y。总摄入剂量平均值为3.18±0.14 mSv/y，致癌风险平均值为(79.5±3.55)× 10−4。

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Activity concentration and annual effective ingestion dose assessment due to natural radionuclides present in cereal samples consumed by inhabitants of India

In the present study, activity concentration and annual effective ingestion dose assessment was carried out in cereal samples using gamma spectrometry. In the studied samples the activity of 226Ra, 238U, 232Th, and 40K varied from 10.25±0.94 Bq/kg to 29.13±0.69 Bq/kg, 7.04±0.13 Bq/kg to 20.08±1.32 Bq/kg, 22.20±2.46 Bq/kg to 58.21±1.15 Bq/kg and 1158.4±26.05Bq/kg to 1962.2±18.17 Bq/kg with an average value of 20.06±4.82 Bq/kg, 13.08±1.31 Bq/kg, 41.53±3.77 Bq/kg, and 1639±75.55 Bq/kg respectively. The average value of annual effective ingestion dose from ingested food was 0.62±0.08 mSv/y, 0.07±0.006 mSv/y, 1.20±0.11 mSv/y, and 1.28±0.06 mSv/y from 226Ra, 238U, 232Th, and 40K, respectively. The average value of total ingestion dose and cancer risk was found to be 3.18±0.14 mSv/y and (79.5±3.55) × 10−4 respectively.

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来源期刊

International Journal of Low Radiation Environmental Science-Health, Toxicology and Mutagenesis

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期刊介绍： The IJLR is a peer-reviewed journal dedicated to the publication of research articles, review papers and technical notes in all domains related to low-dose radiation, among which are the biological and health effects in humans and the biota, in vitro and in vivo research on low radiation effects, regulatory and policy aspects, risk estimation and public perception.