催化伏安法测定矿石中的微量铬  

Determination of trace chromium in ore by catalysis volt-ampere

作　　者：夏艳秋 袁庆云 马力[2] 陈永乐[2] 

机构地区：[1]辽宁葫芦岛有色金属集团公司高纯研究所,辽宁葫芦岛125003 [2]天津地质研究院,天津300000

出　　处：《有色矿冶》2005年第6期57-58,62,共3页Non-Ferrous Mining and Metallurgy

摘　　要：实验在含0.04%铜铁试剂,0.5%氢氧化铵.0.09 M氯化铵和0.4%氯化钾的支持电解质中,用封闭式流动体系微电解池催化伏安法测定矿石中的微量铬,建立了一个灵敏、准确、快速的分析方法.铬催化电流在0.002～0.05 μg/mL范围内与它的浓度成比例,此法选用于矿石中微量铬的测定.An accurate analytical method of trace chromium determination in the ore is established. The determination is operated in close flowing system electrolytic microcell which solution is a mixture of cupferron reagent （0.04 % ）, ammonium hydroxide（0.5 % ）, ammonium chloride （0.09 M）and potassium chloride（0.4 % ）by catalysis volt - ampere. The catalysis current of chromium is in proportion to its concentration which is between 0. 002 mg/mL and 0.05 mg/mL. This method is very fit for the determination of chromium in the ore.

关 键 词：痕量铬 封闭流动体系 催化伏安 

分 类 号：O657.14[理学—分析化学]