铜、锌污染河流与植物污染的研究

Study on River and Plant Polluted by Copper and Zinc from Dressing Works

通过对受铜、锌污染的河流水样、底泥、土壤及植物进行采样分析,结果表明:选矿废水对河流水质造成较严重的铜、锌污染,铜超过地面水Ⅳ、V类标准和污水综合排放一级标准,锌超过地面水Ⅱ、Ⅲ类标准,河流底泥中铜、锌严重超标。生长于污染水体中的植物,其铜、锌含量显著地高于对照植物,即植物污染严重。在几种试样植物中,紫茎泽兰铜、锌含量最高,其次是光叶蕨。此外,研究表明,污染植物铜、锌具有高度相关性。

The analysis on water samples and sediment samples and soil samples and plants samples polluted by copper and zinc are tested. The results reveal that the water quality of the water samples polluted by copper and zinc from dressing works is less than the national fifth grade standard. The contents of copper and zinc in the sediments samples cannot reach the national standard either. The contents of copper and zinc tested from the plants growing in the polluted water are obviously higher than that of contrast plants, that is, the plants is polluted seriously. The experimental results show that Eupatorium adenophorum spreng ranks the highest with copper and zinc, followed by Knuiwatsukia cuspidate. Therefore, there is high relativity of copper and zinc for the plants.