2014～2017年四川省主要城市饮用水源地放射性变化趋势

Radiation Change Trend of Drinking Water Sources in Main Cities of Sichuan Province from 2014 to 2017

利用2014~2017年四川省21个市(州)政府所在地的集中式饮用水水源地水中总α、总β活度浓度监测数据,采用spearman秩相关系数法分析了4年来四川省21个市(州)集中式饮用水水源地水中总α和总β活度浓度水平与变化趋势。结果表明:4年来,全省21个市(州)饮用水水源地水中的总α和总β活度浓度均满足国家相关标准的限值要求,总α和总β活度浓度呈现上升趋势的监测断面(点)相对较多。

According to the monitoring data of total α and total β activity concentration in the centralized drinking water sources in 21 cities（ states） in Sichuan Province from 2014 to 2017,level and variation trend of total α and total β activity concentration in centralized drinking water sources in 21 cities（ states） in Sichuan Province in the past four years are analyzed spearman rank correlation coefficient method. The results show that in the past four years,the total α and total β activity concentrations in drinking water sources of 21 cities（ states） in the province all meet the limit requirements of the relevant national standards,and the monitoring sections（ points） are relatively more where the total α and total β activity concentrations show an upward trend.