各种水泥样品中天然放射性核素辐射剂量的评估

Rohit Mehra, P. Bala, K. Badhan, R. Sonkawade
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引用次数: 0

摘要

使用基于高分辨率伽马能谱系统的HPGe探测器,分析了五家公司的普通硅酸盐水泥(OPC)和硅酸盐硅酸盐水泥(PPC)样品,测量了226 Ra, 232 Th和40 K。对于226 Ra、232 Th和40 K,所选OPC水泥样品的测量活度分别为19.24 Bq kg - 1 (JK Laxmi)至40.73 Bq kg - 1 (JayPee)、29.49 Bq kg - 1 (JK Laxmi)至42.17 Bq kg - 1 (JayPee)和228.25 Bq kg - 1 (JK cement)至304.98 Bq kg - 1 (Binani)。所选PPC水泥样品中镭、钍和钾的浓度分别为22.50 Bq kg - 1 (JK Laxmi) ~ 48.83 Bq kg - 1 (Binani)、30.74 Bq kg - 1 (JK Laxmi) ~ 70.48 Bq kg - 1 (Binani)和267.94 Bq kg - 1 (Binani) ~ 328.88 Bq kg - 1 (JayPee)。计算了所测样品的镭当量、年有效剂量、吸收剂量和危害指数。
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Assessment of radiation dose due to natural radionuclides in various cement samples
Samples of Ordinary Portland Cement (OPC) and Portland Pozzolana Cement (PPC) from five companies were analysed for the measurement of 226 Ra, 232 Th and 40 K using a HPGe detector based on high-resolution gamma spectrometry system. The measured activity in the selected OPC cement samples varies from 19.24 Bq kg −1 (JK Laxmi) to 40.73 Bq kg −1 (JayPee), 29.49 Bq kg −1 (JK Laxmi) to 42.17 Bq kg −1 (JayPee) and 228.25 Bq kg −1 (JK Cement) to 304.98 Bq kg −1 (Binani) for 226 Ra, 232 Th and 40 K, respectively. The concentration of radium, thorium and potassium in the selected PPC cement samples varies from 22.50 Bq kg −1 (JK Laxmi) to 48.83 Bq kg −1 (Binani), 30.74 Bq kg −1 (JK Laxmi) to 70.48 Bq kg −1 (Binani) and 267.94 Bq kg −1 (Binani) to 328.88 Bq kg −1 (JayPee), respectively. Radium equivalent, annual effective dose, absorbed dose and hazard indices were also calculated for the measured samples.
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来源期刊
International Journal of Low Radiation
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.
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