催化褪色光度法测定微量锰(Ⅱ)的研究  

Spectrophotometric Determination of Microamount of Manganese ( Ⅱ ) by Catalytic Decolonization

作　　者：林清赞 钟勇[1] 许金钩[1] 

机构地区：[1]厦门大学化学系,厦门361005

出　　处：《分析化学》1995年第3期340-342,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文研究在硫酸介质中,锰(Ⅱ)催化EDTA还原重铬酸根,而使之褪色的新指示反应.确定了催化褪色反应的动力学条件.锰(Ⅱ)的浓度在 0～0.4μg/ml范围内,工作曲线呈良好的线性关系.检测限为0.011μg/mL,该方法用于天然水及污水中锰的测定,获得满意结果.Manganese ( Ⅱ ) can catalyze the decolourizing reaction of dichromate with EDTA in a H2SO4 solution. The optimum condition influencing the rate of catalytic declourizing reaction was established. A linear range is obtained from 0 to 0. 4 ug/mL, and the minimum detectable concentration of Mn( Ⅱ ) is 0. 011 ug/mL. This method is satisfactorily applied to the determination of Mn( Ⅱ ) in natural water and sewage.

关 键 词：催化褪色 光度法 锰 水 污水 

分 类 号：O614.711[理学—无机化学] O657.32[理学—化学]