罗丹明B电极催化电位法测定微量锰的研究  

Determination of Trace Manganese by Catalytic Potentiometric Method With Rhodamine B Ion-selective Electrode

作　　者：董学芝[1] 艾天召[1] 

机构地区：[1]河南大学化学系,开封475001

出　　处：《分析化学》1993年第11期1293-1295,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文基于在邻二氮菲(活化剂)存在下,Mn(Ⅱ)对高碘酸根氧化罗丹明B退色反应的催化作用,对于用罗丹明B电极(自制)以催化电位法测定微量锰进行了研究。实验表明,该方法测锰的线范围为11～48ng/ml。选择性较好,温度控制方便。本文在未经分离的情况下测定了标准钢样中的锰含量,结果满意。A new catalytic potentiometric method for the determination of trace manganese is proposed. It is based on the catalysis of manganese to the reaction between Rhodamine B and IO4- ,The linear range of the method is 11-48ng/ml for Mn2+. The method shows high selectiyity. The manganese in a standard steel sample is determined without separation. The result obtained is close to the standard value.

关 键 词：锰 罗丹明B 催化电位分析 

分 类 号：O614.711[理学—无机化学]