北京市地表水和饮用水中铀浓度分析
Analysis of uranium concentration in surface water and drinking water in Beijing,China
王欢 1孙亚茹 1姚美男 1白斌 1孟庆华 1马永忠1
作者信息
- 1. 北京市疾病预防控制中心,北京 100013
- 折叠
摘要
目的 了解北京市地表水和饮用水中铀浓度水平以及铀浓度和总α放射性的相关性.方法 采集北京市16个区地表水和饮用水,通过紫外荧光法和厚源法,使用WGJ-Ⅲ微量铀分析仪和LB6008六路α、β测量装置分别分析样品中的铀浓度和总α放射性.结果 地表水和饮用水铀浓度分别为1.131 μg/L和1.572μg/L,总α放射性活度浓度分别为0.059 Bq/L和0.074 Bq/L.地表水与饮用水比较,铀浓度以及总α放射性水平之间的差异均无统计学意义(P＞0.05).铀浓度与总α放射性活度浓度呈正相关,相关系数r=0.700(P＜0.05),总α放射性水平有48％由铀浓度决定.摄入饮用水中238U所致待积有效剂量范围为3.284 × 10-5～1.640 × 10-3 mSv,平均值为5.400 × 10-4 mSv.结论 北京市地表水和饮用水中铀和总α放射性水平在本底范围内波动,远低于GB 5749-2022《生活饮用水卫生标准》中规定的0.03 mg/L的限值和0.5 Bq/L的指导值,通过食入途径摄入饮用水中铀引起的年有效剂量很小.
Abstract
Objective To explore the uranium concentration in surface water and drinking water in Beijing,China and the relationship between uranium concentration and gross α activity concentration.Methods Water samples were collected from 16 districts in Beijing.Uranium concentration and gross α activity concentration were measured with WGJ-Ⅲ trace uranium analyzer and LB6008 six-channel α/β counter using the ultraviolet fluorescence and thick source methods.Results The uranium concentrations in surface water and drinking water were 1.131 and 1.572 μg/L,respectively.The gross α activity concentrations in surface water and drinking water were 0.059 and 0.074 Bq/L,respectively.There were no significant differences in uranium concentration and gross α activity concentration between surface water and drinking water(P＞0.05).The uranium concentration was positively correlated with the gross α activity concentration,with a correlation coefficient of 0.700(P＜0.05).The gross α activity concentration was determined by the uranium concentration with a de-termination coefficient of 48％.The committed effective dose of 238U in drinking water was between 3.284 x 10-5 and 1.640 x 10-3 mSv,with an average value of 5.400 × 10-4 mSv.Conclusion The uranium concentration and gross α activity in the surface water and drinking water in Beijing fluctuate and remain in the background range.These values are much lower than the recommended limits of 0.03 mg/L and 0.5 Bq/L stipulated in the GB 5749-2021 Standard for Drinking Water Quality.The annual committed effective dose of 238U through drinking water ingestion is very small.
关键词
北京市/地表水/饮用水/铀/总αKey words
Beijing/Surface water/Drinking water/Uranium/Gross α引用本文复制引用
基金项目
北京市科技计划(Z211100007021010)
北京市高层次公共卫生技术人才建设项目(学科带头人-01-20)
出版年
2024
NETL
NSTL
万方数据