鄱阳湖水体重金属污染的现状评价

The Status Pollution Assessment on Heavy Mental in Water Body of Poyang Lake

为研究鄱阳湖的重金属污染现状,分别在平水期和枯水期选取鄱阳湖7个采样点进行了水体的采样监测。监测结果表明,重金属在水体中的浓度,一般是枯水期大于平水期。各采样点水体中Cu的含量,除饶河口和白沙洲外,均能满足I类水质标准;水体中Zn的含量,除饶河口外,均能满足I类水质标准;水体中Cd的含量满足I类水质标准;水体中Pb的含量满足Ⅱ类水质标准。总的来说,鄱阳湖水质满足Ⅱ类地表水质标准。

The water samples were obtained and studied for investigation and assessment on heavy metals pollution in average water season and low water season. The results show that the content of Cu, Zn, Cd and Pb in low water season were higher than those in average water season. The content of Cu in water could be consonant with the first standard of the Environmental Quality Standard for Surface Water, except to the positions of the ouffall of Raohe River and Baishazhou ; The content of Zn in water also could be consonant with the first standard of the Environmental Quality Standard for Surface Water, except to the positions of the ouffall of Raohe River; the content of Cd in water also could be consonant with the first standard; the content of Pb in water also could be consonant with the second standard. The water quality of Poyang Lake could be consonant with the second standard of the Environmental Quality Standard for Surface Water, in all.