铬污染土壤中Cr^(6+)的测定

Cr^(6+) DETERMINATION OF SOIL POLLUTED BY CHROMIUM

通过研究土壤中的Cr6+的提取测定方法,结果表明,用0 4mol LKCl为提取剂,离心分离提取液,可简单、快速、准确地测定土壤中的Cr6+。所建立的方法适用于北方偏碱性土壤。

Chromium is a serious pollutant to the environment. Cr6+ is mainly existed in the form of CrO2-4. The substance of CrO2-4 is easily removed and diffused in the soil. And this is the main reason that CrO6+ pollutes the groundwater in the northern China. Studies are given to the determination method of Cr6+ in the soil. The results showed that 0.4 mol/L KCl is selected to be the extractant. It can separate the extracted liquid. The method can determinate Cr6+ rapidly and sensitively. And this method is suitable for the alkaline soil in northern China.