高浓度六价铬的两种测定方法比较

Comparison between two methods of Determining High Concentration of Cr^(6+)

比较分析了饮用水及污水中高浓度六价铬的两种测定方法。实验结果表明,硫酸亚铁铵滴定法适合于高浓度六价铬废水中总铬的测定,重铬酸钾法适合于直接测定高浓度六价铬含量。

Two methods of determining Cr^6＋ in drinking water and wastewater with high concentration of Cr^6＋ are compared and analyzed in this paper.The experimental results show that（NH4） 2Fe（SO4） 2 titrimetric method is suitable for the measurement of the total Cr of wastewater with high concentration Cr^6＋ and K2CrO7 method is suitable for the direct measurement and determination of high concentration of Cr^6＋.