陕西某钼矿区河流重金属污染特征评价

该文以陕西省某钼矿区周边受污染水体为研究对象研究其重金属污染特征。根据研究区域具体情况,布设19个采样点,分别为S0~S18,通过电感耦合等离子发射光谱仪对重金属元素Fe、Cd、Cr、Ni、Cu、Zn和Pb含量进行检测,采用单因子评价法和多因子评价法对各污染因子的污染程度进行分析,结果显示重金属污染程度大小为Fe>Cd>Cr>Ni>Cu>Zn>Pb;S5和S11采样点重金属含量较高,其中S5处最为严重,最高Pi达41.067,S11处Pi为8.371,为严重污染区域。

In this paper,the pollution characteristics of heavy metals in the polluted water around a molybdenum mining area in Shaanxi Province were studied.According to the specific conditions of the study area,19 sampling sites were set up,namely S0~S18.The contents of heavy metal elements Fe,Cd,Cr,Ni,Cu,Zn and Pb were detected by inductively coupled plasma emission spectrometer.The pollution degree of each pollution factor was analyzed by single factor evaluation method and multi-factor evaluation method.The results showed that the pollution degree of heavy metals was Fe>Cd>Cr>Ni>Cu>Zn>Pb.The content of heavy metals in S5 and S11 sampling sites was higher,among which S5 was the most serious,and the highest Pi value was 41.067.The Pi value of S11 was 8.371 andis a seriously polluted area.