DISTRIBUTION OF GAMMA RADIATION DOSE RATE AND ACTIVITY CONCENTRATION IN SOIL RELATED WITH NATURAL RADIONUCLIDES ON TAIWAN MAIN ISLAND
DISTRIBUTION OF GAMMA RADIATION DOSE RATE AND ACTIVITY CONCENTRATION IN SOIL RELATED WITH NATURAL RADIONUCLIDES ON TAIWAN MAIN ISLAND
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台湾本岛天然放射性核素相关土壤γ辐射剂量率和活度浓度分布
DOI：
10.1093/rpd/ncac031
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发表时间：
2022
影响因子：
1
通讯作者：
Masahiro Fukushi
中科院分区：
文献类型：
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作者：
Kyoko Saito ; Kazumasa Inoue ; Yuya Ishita ; Hideo Shimizu ; Masahiro Fukushi
为了能够准确地评估核电站事故后对健康的影响，需要关于环境辐射水平的广泛和详细的数据。本研究以台湾主岛为研究对象，以车载调查方式调查空气及土壤辐射水平，而此前并未进行过广泛的环境辐射分布调查。本岛空气平均吸收剂量率为57±110nGyh−1。测量的剂量率分布因土壤地质而异，范围为22~113nGyh−1。土壤平均辐射水平40K为539±1124Bq/kg−1,238U为238Bq/kg−1,232Th为41±22Bq/kg−1。由这些土壤平均辐射水平数据计算的空气吸收剂量率(58nGyh−1)与车载测量方法测定的结果相当。因此，这项研究得出了主要取决于台湾主岛土壤地质的空气吸收剂量率的详细数据。
To enable precise assessment of health impacts following a nuclear power plant accident, extensive and detailed data on environmental radiation levels are needed. This study was undertaken to investigate the air and the soil radiation levels using a car-borne survey on the main island of Taiwan where no extensive environmental radiation distribution survey had been conducted before. The mean air absorbed dose rate on this island was 57 ± 10 nGy h−1. The measured dose rate distribution varied depending on the geology of the soils, and ranged from 22 to 113 nGy h−1. The mean radiation level in soil was 539 ± 124 Bq kg−1for40K, 23 ± 8 Bq kg−1for238U and 41 ± 22 Bq kg−1for232Th. The air absorbed dose rate (58 nGy h−1) calculated from these data of mean radiation level in soil was comparable to that determined by the car-borne survey method. Thus, this study yielded detailed data on air absorbed dose rate depending primarily on the geology of the soils on the main island of Taiwan.