吸附溶出伏安法测定海水中镍、钴条件优化研究  

Optimization of Conditions for Determination of nickel、cobalt in the Seawater by Absorption Voltammetry

作　　者：彭晓 Peng Xiao(Dalian Ecological Environmental Monitoring Center of Liaoning Province,Liaoning Dalian 116023)

机构地区：[1]辽宁省大连生态环境监测中心,辽宁大连116023

出　　处：《云南化工》2020年第8期90-92,共3页Yunnan Chemical Technology

摘　　要：通过实验对吸附溶出伏安法测定海水中镍、钴测定条件进行了探索,筛选出了最佳的化学实验条件。最佳条件为:氨水-氯化铵(1 mol/L)-丁二酮肟(0.01 mol/L)体系为电解质溶液,用氨水溶液(27.5+72.5)调节体系pH值在8.0~9.5之间后,加入0.05 ml的丁二酮肟(0.01 mol/L)进行测试。镍、钴的方法检出限能分别达到0.4μg/L、0.1μg/L,方法精密度准确度良好。The optimum conditions for the determination of nickel and cobalt in seawater by adsorption voltammetry were found.The optimal conditions were as follows:the system of ammonia-ammonium chloride(1 mol/L)-butanedioxime(0.01 mol/L)was an electrolyte solution.After the pH value of the system was adjusted between 8.0 and 9.5 with ammonia solution(27.5+72.5),0.05 ml of butanedioxime(0.01 mol/L)was added for testing.The detection limit of nickel and cobalt was 0.4 g/L and 0.1 g/L,respectively.The method has good precision and accuracy.

关 键 词：镍 钴 吸附溶出伏安法 

分 类 号：TQ-427.26[化学工程]