测定镀镍溶液中镍含量的新方法  

Novel method for determination of nickel content in a nickel electroplating bath

作　　者：郭崇武[1] 陈建锐[1] 李小花 GUO Chong-wu CHEN Jian-rui LI Xiao-hua(Guangzhou Ultra Union Chemicals Ltd., Guangzhou 510460, China)

机构地区：[1]广州超邦化工有限公司,广东广州510460

出　　处：《电镀与涂饰》2017年第20期1113-1114,共2页Electroplating & Finishing

摘　　要：用三乙醇胺掩蔽镀镍溶液中的铝和铁杂质,加氨-氯化铵缓冲溶液调节试液的pH至10,以紫脲酸铵作指示剂,用EDTA标准溶液滴定镍离子。测定结果的相对标准偏差为0.13%,回收率为99.34%。本法简单、准确、环保。The aluminum and iron impurities in a nickel electroplating bath are masked by triethanolamine, and the ammonia-ammonium chloride buffer solution is added to the test solution to adjust its pH to 10. The nickel ions are then titrated by EDTA （ethylenediaminetetraacetic acid） standard solution with murexide as indicator. The method features a relative standard deviation of 0.13% and a recovery of 99.34%, and is simple, accurate and environment-friendly.

关 键 词：镀镍溶液 杂质 三乙醇胺 掩蔽剂 镍 乙二胺四乙酸 滴定 

分 类 号：TQ153.2[化学工程—电化学工业] O655.25[理学—分析化学]