某铀尾矿库区夏季大气颗粒物污染特征研究

Research on the Pollution Characteristics of Atmospheric Particulate Matter at the Area of a Uranium Tailings in Summer

采集了某铀尾矿库区夏季大气颗粒物(TSP、PM2.5),检测分析了颗粒物质量浓度及铀、重金属(Pb、Cd、Cu)含量,结果表明:TSP的质量浓度为53.9μg/m3,PM2.5的质量浓度为28.0μg/m3,TSP与PM2.5的质量浓度的相关系数R=0.832 2;TSP中铀的含量为0.078μg/m3,PM2.5中铀的含量为0.025 6μg/m3;TSP中Pb、Cd、Cu的含量分别为0.111 2μg/m3、0.014 9μg/m3、0.179 7μg/m3,PM2.5中Pb、Cd、Cu的含量分别为0.063 9μg/m3、0.007 4μg/m3、0.038 1μg/m3;TSP中重金属含量由高到低的顺序是Cu>Pb>Cd,PM2.5中重金属含量由高到低的顺序是Pb>Cu>Cd.

The summer samples of TSP and PM2. 5were collected in the area of a uranium tailings,the mass concentration of the TSP and PM2. 5,the content of uranium and heavy metal element（ Pb、Cd、Cu） were detected and analyzed,the results showed that the mass concentration of the TSP was 53. 9 μg /m3,and the PM2. 5was 28. 0 μg /m3,the correlation coefficient of TSP mass concentration and PM2. 5mass concentration was R = 0. 832 2; the content of uranium in TSP was 0. 078 μg /m3,and the content of uranium in PM2. 5was0. 025 6 μg /m3; the content of Pb,Cd,Cu in TSP were 0.111 2 μg/m3,0.014 9 μg/m3,0. 179 7 μg /m3respectively,the content of Pb,Cd,Cu in PM2. 5were 0. 063 9 μg /m3,0. 007 4 μg /m3,0.038 1 μg/m3,respectively; the order of the content of heavy metal in TSP from high to low was Cu〉 Pb 〉Cd,In PM2. 5was Pb 〉 Cu〉 Cd.