CAJ | 학술논문

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4.2×10-4Bq/m3,并分别持续存在25、4和6d.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.
목적 평개일본복도제일핵전참핵설루사고대요녕성국부지구배경방사성수평적영향정도.방법 대대기기용효、침강회、음용수、소채、우내、해산품진행γ핵소적능보측량화총방사성분석；대인공렬변핵소131I、134Cs화137Cs등방사성수평진행응급감측.결과 핵사고발생20 d후,재대기중륙속감측도료인공핵소131I이급134Cs、137Cs,최고농도분별위4.6 ×10-3、2.9 ×10-4화4.2×10-4Bq/m3,병분별지속존재25、4화6d.침양채집적소채、우내、음용수이급단동산적해산품중미발현인공핵소.결론 일본핵사고대요녕성대기조성료경도오염,단미대소채、우내급음용수조성오염.
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 rad ionuclides 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 vegetablcs,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.