Preliminary assessment of ecological exposure of adult residents in Fukushima Prefecture to radioactive cesium through ingestion and inhalation.
Preliminary assessment of ecological exposure of adult residents in Fukushima Prefecture to radioactive cesium through ingestion and inhalation.
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DOI：
10.1007/s12199-011-0251-9
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发表时间：
2012-07
影响因子：
4.7
通讯作者：
Ishikawa, Hirohiko
中科院分区：
文献类型：
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作者：
Koizumi, Akio;Harada, Kouji H;Niisoe, Tamon;Adachi, Ayumu;Fujii, Yukiko;Hitomi, Toshiaki;Kobayashi, Hatasu;Wada, Yasuhiko;Watanabe, Takao;Ishikawa, Hirohiko
这项研究旨在评估2011年7月2日至7月8日期间福岛县成年居民通过摄入和吸入134Cs(Cs)和137Cs的生态暴露情况。福岛县当地城镇购买了55套自来水套餐，每套套餐相当于一个人的每日摄入量。还购买了当地生产的牛奶(21个样本)和蔬菜(43个样本)。同时，使用大容量采样器在12个不同地点进行空气采样。2011年7月，在京都收集了19套控制餐。用锗探测器测量了样品中的134Cs和137Cs水平。在来自福岛的55份样本膳食中，有36份检测到了放射性，相比之下，京都的19份样本中有一份检测到了放射性。估计剂量水平的中位数(μSv/年)为3.0，范围从不可检测到83.1.牛奶(21个)或蔬菜(49个)样本的污染水平均未超过目前建议的奶类200和蔬菜500的限量(Bq/kg)。据估计，在9个地点吸入的总有效剂量水平为<；3μSv/年，但在距离受损核电站20公里半径边缘的另外3个地点的样本显示污染水平较高(μSv/年)：饭馆14.7，浪江县76.9，胜老27.7。在福岛，通过摄入和吸入暴露于134Cs和137Cs的水平是可辨别的，但通常在推荐的范围内。本文的在线版本(doi：10.1007/s12199011251-9)包含补充材料，授权用户可以使用。
This study aims to estimate the ecological exposure of adult residents of Fukushima Prefecture to 134cesium (Cs) and 137Cs through ingestion and inhalation between July 2 and July 8, 2011. Fifty-five sets of meals with tap water, each representing one person’s daily intake, were purchased in local towns in Fukushima Prefecture. Locally produced cow’s milk (21 samples) and vegetables (43 samples) were also purchased. In parallel, air sampling was conducted at 12 different sites using a high-volume sampler. Nineteen sets of control meals were collected in Kyoto in July 2011. 134Cs and 137Cs levels in the samples were measured using a germanium detector. Radioactivity was detected in 36 of the 55 sample meals from Fukushima, compared with one of 19 controls from Kyoto. The median estimated dose level (μSv/year) was 3.0, ranging from not detectable to 83.1. None of the cow’s milk (21) or vegetable (49) samples showed levels of contamination above the current recommended limits (Bq/kg) of 200 for milk and 500 for vegetables. The total effective dose levels by inhalation were estimated to be <3 μSv/year at nine locations, but samples at three other locations close to the edge of the 20-km radius from the crippled nuclear power plant showed higher levels of contamination (μSv/year): 14.7 at Iitate, 76.9 at Namie, and 27.7 at Katsurao. Levels of exposure to 134Cs and 137Cs in Fukushima by ingestion and inhalation are discernible, but generally within recommended limits. The online version of this article (doi:10.1007/s12199-011-0251-9) contains supplementary material, which is available to authorized users.