广州市生活饮用水地表水源地微量元素调查

Investigation on Trace Elements in Guangzhou Drinking Water Sources

对广州市秀全、巴江、江村、石门、西村、刘屋洲、南洲和沙湾等主要生活饮用水地表水源地中钼、钴、铍、硼、锑、镍、钒、钛、锡、银和钡等微量元素含量水平进行了调查,并采用单因子污染指数法和内梅罗综合污染指数法对微量元素水质进行了评价。结果表明,硼和锡在所有地表水源地均未检出,铍在部分地表水源地有检出,其他检测项目在所有地表水源地均有检出。整体而言,微量元素含量水平不高,地表水源地由北往南微量元素内梅罗指数呈逐渐降低态势,南部水源地水质优于北部水源地。巴江和西部水源地镍含量相对较高,电镀企业排污监管力度有待进一步加强。

Trace elements（Mo,Co,Sb,Ni,Ba,V,Ti,Sn,Ag,Be,B etc.） in Guangzhou drinking water sources were monitored,and assessed by using single factor pollution index and Nemerow pollution index. The results show that all the trace elements were over detection limit except Sn and B. As a whole, the levels of trace elements in Guangzhou drinking water sources are low, and the water sources in south area are better than those in the north area.