中华放射医学与防护杂志
中華放射醫學與防護雜誌
중화방사의학여방호잡지
Chinese Journal of Radiological Medicine and Protection
2013年
6期
648-652
,共5页
石二为%崔勇%张谦%李涤%李鑫%要爽%郭军巧%李永久%张晶
石二為%崔勇%張謙%李滌%李鑫%要爽%郭軍巧%李永久%張晶
석이위%최용%장겸%리조%리흠%요상%곽군교%리영구%장정
红沿河核电站%放射性水平%运行前%有效剂量
紅沿河覈電站%放射性水平%運行前%有效劑量
홍연하핵전참%방사성수평%운행전%유효제량
Hongyanhe nuclear power plant%Radioactivity levels%Before operation%Effective doses
目的 调查辽宁红沿河核电站运行前周边地区食品和饮用水以及环境放射性本底水平.方法 监测核电站周边30 km范围内12个采样点的食品、饮用水、土壤中γ核素浓度和2个采样点的沉降灰、气溶胶放射性水平以及地表天然y辐射水平,并估算当地居民由膳食摄入所致内照射剂量.结果 当地食品中的放射性核素主要为天然核素238U、226Ra、232Th、40K以及人工核素137Cs,其中食品中137Cs平均活度水平(0.029±0.043) Bq/kg.饮用水中总α放射性水平(0.07 ±0.06)Bq/L,总β放射性水平为(0.32 ±0.35) Bq/L,沉降灰总β放射性水平(0.40±0.14) Bq·m-2·d-1,气溶胶样品中未发现人工核素,周边地区土壤中137Cs平均活度为(2.16±1.37)Bq/kg.结论 核电站周边地区采集的食品中除微量137Cs外,未见其他人工γ核素,食品和饮用水中放射性核素水平均低于国家标准限值,沉降灰及气溶胶放射性水平在正常本底范围,居民由食入人工核素137Cs所致年有效剂量为0.18 μSv/年.
目的 調查遼寧紅沿河覈電站運行前週邊地區食品和飲用水以及環境放射性本底水平.方法 鑑測覈電站週邊30 km範圍內12箇採樣點的食品、飲用水、土壤中γ覈素濃度和2箇採樣點的沉降灰、氣溶膠放射性水平以及地錶天然y輻射水平,併估算噹地居民由膳食攝入所緻內照射劑量.結果 噹地食品中的放射性覈素主要為天然覈素238U、226Ra、232Th、40K以及人工覈素137Cs,其中食品中137Cs平均活度水平(0.029±0.043) Bq/kg.飲用水中總α放射性水平(0.07 ±0.06)Bq/L,總β放射性水平為(0.32 ±0.35) Bq/L,沉降灰總β放射性水平(0.40±0.14) Bq·m-2·d-1,氣溶膠樣品中未髮現人工覈素,週邊地區土壤中137Cs平均活度為(2.16±1.37)Bq/kg.結論 覈電站週邊地區採集的食品中除微量137Cs外,未見其他人工γ覈素,食品和飲用水中放射性覈素水平均低于國傢標準限值,沉降灰及氣溶膠放射性水平在正常本底範圍,居民由食入人工覈素137Cs所緻年有效劑量為0.18 μSv/年.
목적 조사료녕홍연하핵전참운행전주변지구식품화음용수이급배경방사성본저수평.방법 감측핵전참주변30 km범위내12개채양점적식품、음용수、토양중γ핵소농도화2개채양점적침강회、기용효방사성수평이급지표천연y복사수평,병고산당지거민유선식섭입소치내조사제량.결과 당지식품중적방사성핵소주요위천연핵소238U、226Ra、232Th、40K이급인공핵소137Cs,기중식품중137Cs평균활도수평(0.029±0.043) Bq/kg.음용수중총α방사성수평(0.07 ±0.06)Bq/L,총β방사성수평위(0.32 ±0.35) Bq/L,침강회총β방사성수평(0.40±0.14) Bq·m-2·d-1,기용효양품중미발현인공핵소,주변지구토양중137Cs평균활도위(2.16±1.37)Bq/kg.결론 핵전참주변지구채집적식품중제미량137Cs외,미견기타인공γ핵소,식품화음용수중방사성핵소수평균저우국가표준한치,침강회급기용효방사성수평재정상본저범위,거민유식입인공핵소137Cs소치년유효제량위0.18 μSv/년.
Objective To investigate the radioactivity levels in food,drinking water and the environment in the areas around Hongyanhe nuclear power plant (NPP) before operation.Method The radioactivity monitoring was performed within 30 km of Hongyanhe NPP at 12 sampling sites by detecting food,drinking water,soils and gamma radiation level,and the samples of atmosphere aerosols and precipitations were monitored at 2 sampling sites.The effective doses of local residents by ingestion were estimated.Results The major radionuclides in food were 238U,226Ra,232Th,40K and 137Cs.The average levels of 137Cs in food were (0.029 ± 0.043) Bq/kg.The average gross-alpha and gross-beta activities in drinking water were (0.07 ± 0.06) Bq/L and (0.32 ± 0.35) Bq/L,respectively.The gross-beta activities of precipitations were (0.40 ± 0.14) Bq · m-2 · d-1.The concentrations of man-made radionuclides in atmosphere samples were lower than the lower detection limits.The average levels of 137Cs in nearby soils were (2.16 ± 1.37)Bq/kg.Conclusions No man-made gamma radionuclides can be found in the food collected nearby except 137Cs.The concentrations of radionuclides in food and drinking water are lower than the relevant national limits and the radioactivity levels of atmosphere aerosols and precipitations are at normal background level.The effective dose to local residents by ingestion of man-made 137Cs is 0.18 μSv/year.
