催化褪色光度法测定痕量锰  

Spectrophotometric Determination of Trace Manganese by Catalytic Decolonization

作　　者：陈亚华[1] 韩秀丽[2] 

机构地区：[1]郑州大学化学系,郑州450052 [2]郑州磨料磨具磨削研究所

出　　处：《冶金分析》1993年第4期22-24,共3页Metallurgical Analysis

摘　　要：本文研究了用氨三乙酸作活化剂,锰(Ⅱ)催化高碘酸钾氧化次甲基蓝褪色的新指示反应.该法具有一定的选择性,方法的检出限为0.26ng/ml,线性范围为10～100ng/25ml.不经分离可直接用于饮用水及精镁中锰的测定.A new catalytic spactrophotoinetric mathod for determining trace Mn has been described. The method is based on the oxidation of nuthylene blue with potassium periodate using manganese as a catalyst and nitrilo triacetic acid as an activator. The detection limit of Mn is 0.26ng/ml. The linear range of determination is 10-100ng/2Sml for manganese. The method has been used to determine tra.ce Mn in tap water and pure magnisium.

关 键 词：锰 次甲基蓝 催化光度法 痕量分析 

分 类 号：TF801.3[冶金工程—有色金属冶金]