氢氧化镍中三价镍的测定方法研究  

Study on Determination Method for Trivalent Nickel in Nickel Hydroxide

作　　者：杨林[1] 黄宝贵[1] 肖湘[1] 李玉茹[1] 

机构地区：[1]长沙矿冶研究院,湖南长沙410012

出　　处：《矿冶工程》2009年第5期78-81,共4页Mining and Metallurgical Engineering

摘　　要：研究了Ni3+与Mn2+的化学反应过程及相关条件。实验观察到Ni(OH)3或NiOOH在Mn2+-H3PO4-H2SO4混合溶液中被溶解的反应过程中,Mn2+同步被定量氧化为三价状态(Mn3+),故可用亚铁盐标准溶液常法滴定测得Mn3+量,以计算出Ni3+的含量。该方法新颖、简便、快速,结果令人满意。The process and relevant conditions of chemical reaction between Ni^3＋ and Mn^2＋ are studied. It is observed that Mn^2＋ is quantitativly oxidized into Mn^3＋ during the H3POa-H2SO4. The Mn^3＋ amount can be titrated by the dissolution of Ni （OH）3 or NiOOH in mixed solution of Mn^2＋- conventional method of ferrous salt standard solution so that the percentage of Ni^3 ＋ in the material can be calculated thereby. The new method is simple and efficient, with satisfactory results.

关 键 词：氢氧化镍 羟基氧化镍 三价镍 价态分析 

分 类 号：O655[理学—分析化学]