QUANTITATION OF JAPANESE CEDAR POLLEN AND RADIOCESIUM ADHERED TO NONWOVEN FABRIC MASKS WORN BY THE GENERAL POPULATION
QUANTITATION OF JAPANESE CEDAR POLLEN AND RADIOCESIUM ADHERED TO NONWOVEN FABRIC MASKS WORN BY THE GENERAL POPULATION
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DOI：
10.1097/hp.0000000000000078
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发表时间：
2014-08-01
期刊：
影响因子：
2.2
通讯作者：
Miyazawa, Kiyoshi
中科院分区：
文献类型：
--
作者：
Higaki, Shogo;Shirai, Hideharu;Miyazawa, Kiyoshi
2012年春天，也就是福岛第一核电站核灾难发生一年后，受放射性铯污染的日本雪松花粉可能通过吸入导致普通人群内部暴露。为了确定花粉是否通过日本雪松吸收放射性铯而受到污染，从而导致吸入剂量，作者在2012年春季测量了居住在日本东部（包括福岛县）的68名人类受试者佩戴的口罩上的放射性铯和日本雪松花粉，持续8周。个人戴口罩的最大累积Cs-137和Cs-134放射性活度分别为21 ± 0.36 Bq和15 ± 0.22 Bq，估计8周有效剂量为0.494 μ Sv。在8周期间，福岛县的平均估计有效剂量为0.149 μ Sv，包括东京都在内的其他县为0.015 μ Sv。放射性铯的活动和日本雪松花粉计数之间的相关性是中等的。然而，成像板和光学显微镜观察表明，口罩上附着的放射性铯的主要来源是扬尘。
In the spring of 2012, a year after the Fukushima Daiichi nuclear disaster, radiocesium-contaminated Japanese cedar pollen may have caused internal exposure to the general population by inhalation. To determine if pollen had been contaminated through uptake of radiocesium by Japanese cedars and was therefore contributing to inhalation doses, the authors measured radiocesium and Japanese cedar pollen adhered to masks worn by 68 human subjects residing in eastern Japan, including Fukushima prefecture, for 8 wk in the spring of 2012. The maximum cumulative Cs-137 and Cs-134 radioactivities on masks worn by an individual were 21 +/- 0.36 Bq and 15 +/- 0.22 Bq, respectively, and the estimated effective dose during the 8 wk was 0.494 mu Sv. The average estimated effective dose during the 8 wk was 0.149 mu Sv in Fukushima prefecture and 0.015 mu Sv in other prefectures, including Tokyo metropolitan. The correlation between radiocesium activity and the Japanese cedar pollen count was moderate. However, imaging-plate and light microscopy observations showed that the main source of radiocesium adhered to masks was fugitive dust.