芬兰私人水井饮用水中的天然放射性
Natural radioactivity in drinking water in private wells in Finland.
作者信息
Vesterbacka P, Mäkeläinen I, Arvela H
机构信息
STUK, Radiation and Nuclear Safety Authority, P.O. Box. 14, 00881 Helsinki, Finland.
出版信息
Radiat Prot Dosimetry. 2005;113(2):223-32. doi: 10.1093/rpd/nch446. Epub 2005 Jan 18.
Natural radioactivity in drinking water was determined in population-based random study of 472 private wells. The mean concentrations of (222)Rn, (226)Ra, (234)U, (238)U, (210)Pb and (210)Po in drilled wells were 460, 0.05, 0.35, 0.26, 0.04 and 0.05 Bq l(-1), and in wells dug in the soil were 50, 0.016, 0.02, 0.015, 0.013 and 0.007 Bq l(-1), respectively. Approximately 10% of the drilled wells exceeded a radon concentration of 1000 Bq l(-1) and 18% a uranium concentration of 15 microg l(-1). The mean annual effective dose from natural radionuclides for a drilled well user was 0.4 mSv and 0.05 mSv for a user of a well dug in the soil. The effective dose arising from (222)Rn was 75% of the total of all natural radionuclides for drilled well users. As regards long-lived radionuclides, (210)Po and (210)Pb caused the largest portion of the effective dose. The dose arising from (238)U, (234)U and (226)Ra was only 8% of the total of all natural radionuclides.
在一项基于人群的对472口私人水井的随机研究中，测定了饮用水中的天然放射性。钻井中（222）Rn、（226）Ra、（234）U、（238）U、（210）Pb和（210）Po的平均浓度分别为460、0.05、0.35、0.26、0.04和0.05 Bq l(-1)，土壤中挖掘的水井中相应的平均浓度分别为50、0.016、0.02、0.015、0.013和0.007 Bq l(-1)。约10%的钻井氡浓度超过1000 Bq l(-1)，18%的钻井铀浓度超过15 μg l(-1)。钻井使用者因天然放射性核素产生的年平均有效剂量为0.4 mSv，土壤中挖掘的水井使用者为0.05 mSv。对于钻井使用者，（222）Rn产生的有效剂量占所有天然放射性核素总有效剂量的75%。至于长寿命放射性核素，（210）Po和（210）Pb导致的有效剂量占比最大。（238）U、（234）U和（226）Ra产生的剂量仅占所有天然放射性核素总剂量的8%。
Zotero 插件