Chromium is a serious pollutant to the environment. Cr6+ is mainly existed in the form of CrO2-4. The substance of CrO2-4 is easily removed and diffused in the soil. And this is the main reason that CrO6+ pollutes the groundwater in the northern China. Studies are given to the determination method of Cr6+ 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 Cr6+ rapidly and sensitively. And t...