辽宁某冶炼厂污染土壤的铜污染研究

研究测定了土壤中铜的含量和形态分布规律.结果表明锌生产区土壤中的Cu总量分别约是土壤对照值、辽宁省土壤背景值、全国土壤背景值的14倍、37倍、49倍;而铜生产区则分别约是221倍、575倍、748倍,铜生产区污染很严重.同时铜主要是以较稳定的残渣态铜为主,铜生产区达63.4%,锌生产区为38.5%.可溶态和可交换态铜的含量很低,不同生产区两种形态总和不超过1%;两个生产区的碳酸盐态和有机态两种形态之和分别为55.6%,33.7%.

Study on Copper Pollution of Soil in Site Area of a Smeltery in Liaoning

The copper content determined in soil and the morphological distribution of copper in the site area of a smeltery in Liaoning were studied.The results showed that in the Zn-smelting area the total Cu content in soil is 14,37 and 49 times as high as the corresponding correlation value,provincial background value(of soil elements) and national background value,respectively;whereas in the Cu-smelting area the total Cu content in soil is 221,575 and 748 times,respectively.So serious the Cu-pollution of soil is in the Cu-smelting area.It was found that Cu is mainly in residue form that is relatively stable,and its content is 63.4% and 38.5% in Cu-smelting and Zn-smelting areas,respectively.The copper content in soluble and exchangeable forms is few,and the total Cu content in such two forms is not over 1% in Cu/Zn-smelting areas.The Cu content in carbonate and organic forms is 55.6% and 33.7%,respectively,as found in Cu-smelting and Zn-smelting areas.