地表水中重金属类环境激素污染调查

对深圳10条主要河流和12个饮用水源地水体中的重金属类环境激素进行调查。结果显示,河流中镉0.691～1.515μg/L,铅0.368～41.27μg/L,汞0.185～5.009μg/L且超标率为35.7%;水源地中镉0.019～0.102μg/L,铅ND～0.723μg/L,汞0.004～0.078μg/L且超标率为16.7%。汞污染是深圳市地表水中主要的重金属类环境激素污染,在河流水体中汞污染较重,超出世界河流平均值15倍,饮用水源地汞污染相对较轻,在南方城市中处于中低水平。深圳地表水中汞污染源主要包括燃煤、含汞农药使用、高浓度沉积物释放和境外引水东江水体中含汞等。

Pollution Investigation of Heavy Metal Hormone in Surface Water

The residual levels of heavy metal hormone in 10 rivers and 12 drinking water sources in Shenzhen were investigated.Results showed that in rivers the residue of Cd,Pb and Hg was 0.691 ～ 1.515μg/L,0.368 ～ 41.27μg/L,and 0.185 ～ 5.009μg/L,respectively,and the over standard rate of Hg was 35.7%.In drinking water sources,the residue of Cd,Pb and Hg was 0.019 ～ 0.102μg/L,ND ～ 0.723μg/L and 0.004 ～ 0.078μg/L,and the over standard rate of Hg was 16.7%.Results indicated that Hg was the most important heavy metal hormone pollution issue,and rivers were polluted seriously,Hg residue exceeded 15 times the average level of world rivers,and the drinking water sources were polluted lightly and had a low and intermediate Hg level in Southern China’s cities.Pollution sources of Hg in surface water in Shenzhen were coal,pesticides,sediments and water of water diversion works.