2012—2022年广西食品中^(90)Sr放射性水平分析  

^(90)Sr radioactivity in food in Guangxi from 2012 to 2022

作　　者：卢秀芳[1] 谢萍[1] 吴应宇[1] 雷家杰 马一龙 冯兰英[1] 赵新春[1] LU Xiufang;XIE Ping;WU Yingyu;Lei Jiajie;Ma Yilong;Feng Lanying;ZHAO Xinchun(Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention,Nanning Guangxi 530028)

机构地区：[1]广西壮族自治区疾病预防控制中心,广西南宁530028

出　　处：《首都师范大学学报(自然科学版)》2025年第1期55-60,共6页Journal of Capital Normal University:Natural Science Edition

基　　金：广西医药卫生科研课题项目(Z20190178);广西卫生健康委员会科研课题项目(Z-A20240394)。

摘　　要：为了掌握广西壮族自治区食品中放射性核素^(90)Sr放射性水平,估算其成人摄入^(90)Sr的含量及所致年内照射剂量,本文依据二-(2-乙基己基)磷酸萃取色层法对7类共161份食品样品中的^(90)Sr放射性水平进行监测,并汇总分析监测结果。共检161份食品样品,其中136份检出,检出率为84.5%,样品的比活度为0.006~8.801 Bq/kg,其中茶叶的^(90)Sr比活度最高,平均值为2.880 Bq/kg,检出范围为0.177~8.801 Bq/kg。2012—2022年所检的7类广西食品样品中^(90)Sr放射性水平均低于国家标准限值,成人食用这些食品的^(90)Sr年摄入量为45.7 Bq,远低于国家卫生标准限值3.5×10^(4) Bq,所致成人年内照射剂量为1.270μSv,人群剂量负担轻微。In order to know well the level of ^(90)Sr in food in Guangxi Zhuang Autonomous Region,the content of ^(90)Sr ingested by adults in Guangxi and the resulting annual exposure dose were estimated.The ^(90)Sr level in 161 food samples from 7 categories was monitored using the method of dichroic-(2-ethylhexyl)phosphate extraction chromatography,and the monitoring results were summarized and analyzed in this paper.A total of 161 food samples were detected,136 of which were higher than the minimum detection limit with a rate of 84.5%.The specific activity of samples ranged from 0.006 to 8.801 Bq/kg.The ^(90)Sr specific activity of tea was the highest,with an average value of 2.880 Bq/kg and a detection range from 0.177 to 8.801 Bq/kg.The results of 161 food samples tested from 2012 to 2022 were all lower than the national standard limit.The ^(90)Sr ingestion of adults from these foods was 45.7 Bq,far lower than the national health standard limit 4(3.5×10^(4) Bq).The annual exposure dose of adult was 1.270μSv,and the dose burden of population was slight.

关 键 词：^(90)Sr 放射性水平 摄入量 年内照射剂量 

分 类 号：R146[医药卫生—公共卫生与预防医学] O6[理学—化学]