2010年珠江广州段至出海口微表层水重金属污染状况监测

Investigation on contamination of heavy metals in the surface water from Guangzhou section of Pearl River to sea in 2010

目的:了解2010年珠江广州段至出海口微表层水重金属污染状况。方法:从2010年1月开始,每月中旬在珠江流域广州段上、中、下游及出海口处设置24个固定采水点,采集珠江微表层水。用电感耦合等离子质谱(ICP-MS)法测定水样中的砷、镉、铅、铬重金属含量。结果:Cd属轻微检出,As、Pb和Cr虽然整体含量稳定,但特定采样点、特定时间曾同时出现异常高含量。结论:珠江广州段及经广州的出海口微表层水受到以上4种重金属不同程度的污染,防控污染仍是当前刻不容缓的重任。

Objective：To investigate the contamination of heavy metals in the surface water from Guangzhou section of Pearl River to sea in 2010.Methods：The 24 samples of surface water from the upper,middle and lower reaches from Guangzhou section of Pearl River to sea were collected every mouth in 2010.Quantitation of As,Cd,Pb,Cr in the water was tested by ICP-MS.Results：Cd was slightly detected.While As,Pb and Cr showed overall stable levels,but abnormal detection was also found at some specific sampling points and special time.Conclusion：The surface water from Guangzhou section of Pearl River to sea was polluted by 4 kinds of heavy metals in different degree.Prevention and control of the pollution is still the current urgent task.