【摘要】 研究了酸性高锰酸盐指数测定中Ｃｌ－、ＮＯ、Ｃｒ（Ⅵ）等的干扰规律，并建立了干扰方程。提出了用计算法消除上述干扰的实验方法。该方法应用于环境监测，可提高监测结果的准确度。且简便省时，尤其适用于高含盐水（如海水）中酸性高锰酸盐指数的测定。更多还原

【Abstract】 Interference equations of Cl￣-、NO and Cr（Ⅵ） in the determination of acid permanganate method (COD_Mn)are established. An experimental method by which the above-mentioned interference substances can be eliminated is proposed. If this method is applied to environmental test, the accuracy of testing results will be improved. The method is simple, time-saving and very suitable for the determination of acid COD_Mn in heavy-salt-bearing water.更多还原