Evaluation of radioactive exposure from 137Cs in contaminated areas of Northern Ukraine
Evaluation of radioactive exposure from 137Cs in contaminated areas of Northern Ukraine
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DOI：
10.1097/00004032-200304000-00010
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发表时间：
2003-04-01
期刊：
影响因子：
2.2
通讯作者：
Romantschuk, LD
中科院分区：
文献类型：
--
作者：
Handl, J;Beltz, D;Romantschuk, LD
该文件提供了切尔诺贝利事故后12至15年在乌克兰北方三个地区测量的土壤中Cs-137沉积密度的平均值：在受切尔诺贝利放射性尘埃严重污染的Narodici附近地区（切尔诺贝利核电站以西75公里，所谓的11区），以及在Korosten和Zhitomir周围地区，污染程度要低得多。这三个区域表现出非常不同的Cs-137沉积密度，分别为2.2 MBq m（-2）、400 kBq m（-2）和5 kBq m（-2）。在1年的观察，测量的Cs-137转移到人类的食物链和Cs-137全身内容依赖于Cs-137的每日摄入量进行了现实条件下的农村居民谁住在定居点内区II。对日常饮食成分的详细调查表明，在第二区土壤中发现的高铯-137污染水平对村民收获和消费的所有重要农产品的低铯-137浓度没有任何影响。关于II区人口的消费习惯，发现蘑菇和野浆果占Cs-137每日摄入量的95%以上，在1998年7月至1999年7月期间，H区一组居民测量的（CS）-C-137全身含量约为12 kBq（最大值可达760 kBq）。这些居民来自外部和内部照射的年剂量中位数为1.2 mSv y（-1），几何标准差为2.6。排除极端习惯，总暴露量的几何平均值为1.0 mSv y（-1），几何标准差为1.3。
The paper gives averages of Cs-137 deposition densities in soils from three areas in Northern Ukraine measured 12 to 15 y following the Chernobyl accident: in an area near Narodici (75 km west of the Chernobyl nuclear power plant in the so-called zone 11) heavily contaminated by the Chernobyl fall-out and in areas around Korosten and Zhitomir showing contamination levels to be much lower. The three areas exhibited very different Cs-137 deposition densities of 2.2 MBq m(-2), 400 kBq m(-2), and 5 kBq m(-2), respectively. During a 1-y observation, measurements of the Cs-137 transfer in the food chain to humans and Cs-137 whole body contents dependent on the Cs-137 daily intake were carried out under realistic conditions of the rural inhabitants who lived in settlements within zone II. Detailed investigations of components of the daily diet showed that the high Cs-137 contamination levels found in soils of zone II do not affect in any way low Cs-137 concentrations of all important agricultural products harvested and consumed by villagers. With regard to consumption habits of the population of zone II, mushrooms and wild berries were found to contribute more than 95% of the Cs-137 daily intake to the (CS)-C-137 whole body content of about 12 kBq (with maximum values up to 760 kBq) measured in a group of inhabitants of zone H during a period from July 1998 to July 1999. The median of the annual dose of these inhabitants from external and internal exposures was 1.2 mSv y(-1) with a geometric standard deviation of 2.6. Excluding extreme habits, the geometric mean of the total exposure was 1.0 mSv y(-1) with a geometric standard deviation of 1.3.