日本福岛核事故对辽宁省局部地区环境放射性水平的影响  

The impact of Japanese Fukushima nuclear accident on environmental radiation levels in some areas of Liaoning province

作　　者：石二为[1] 崔勇[1] 张谦[1] 李涤[1] 李鑫[1] 要爽[1] 刘明辉[1] 郭军巧[1] 

机构地区：[1]辽宁省疾病预防控制中心,沈阳110005

出　　处：《中华放射医学与防护杂志》2012年第2期137-140,共4页Chinese Journal of Radiological Medicine and Protection

摘　　要：目的 评价日本福岛第一核电站核泄漏事故对辽宁省局部地区环境放射性水平的影响程度。方法 对大气气溶胶、沉降灰、饮用水、蔬菜、牛奶、海产品进行γ核素的能谱测量和总放射性分析;对人工裂变核素^131I、134Cs和137Cs等放射性水平进行应急监测。结果 核事故发生20 d后,在大气中陆续监测到了人工核素^131I以及134Cs、137Cs,最高浓度分别为4.6×10-3、 2.9×10-4 和4.2×10-4 Bq/m3,并分别持续存在25、4和6 d。沈阳采集的蔬菜、牛奶、饮用水以及丹东产的海产品中未发现人工核素。 结论 日本核事故对辽宁省大气造成了轻度污染,但未对蔬菜、牛奶及饮用水造成污染。Objective To investigate the environmental impact of the Japanese Fukushima No.1 nuclear power plant accident on radiation levels in some areas of Liaoning province. Methods The emergent monitoring was performed by detecting atmosphere aerosols, precipitations, drinking water, vegetables, milk and seafood by gamma spectrometry analysis and gross activity measurements. Results The fission radionuclides of 131I,134Cs and 137Cs were detected in atmosphere aerosols 20 d after nuclear accident. The radionuclides of 131I,134Cs and 137Cs were found existing in atmosphere for 25, 4 and 6 d, respectively, with the highest concentrations of 4.6×10-3, 2.9×10-4 and 4.2×10-4 Bq/m3, respectively. The man-made fission radionuclides could not be detected in vegetables, drinking water and milk from Shenyang city and seafood from Dandong city. Conclusions The atmosphere might be slightly contaminated in Liaoning province due to the nuclear accident, whereas the vegetables, milk and drinking water not contaminated.

关 键 词：日本福岛核事故 辽宁省 放射性水平 

分 类 号：X837[环境科学与工程—环境工程]