碱性锌_镍合金镀液及镀层中锌_镍的测定.pdfVIP

2005 1 27 1 ( 160 ) 43 y : 1001-3849( 2005) 01-0043-03 - 侯　燕 ( , 410007) : 酸性锌-镍合金镀液中锌、镍的测定方法报道很多, 而碱性镀液中锌、镍的测定报道很少。采用 过硫酸铵 氧化剂, 在碱性介质中, 镍与 丁二酮肟生成红色络合物借此比色, 求出镍含量; 用 EDT A 滴定法确定锌、镍总量, 然后减去镍量从中得到锌含量。此方法也可用于镀层中的锌及镍测 定。本方法测定结果准确、快速, 能满足实际生产的要求。 : 锌-镍合金; 分析; 镀液; 镀层 : T G115. 32; TG115. 313: A Determination of Zinc and Nickel in Alkaline - Zinc Nickel Alloy Plating Bath HOU Yan ( Instit te for T esting and Utilization of M inerals of H nan, Changsha410007, China) : - Abstract While a large n mber of methods of determining contents of Zn and Ni in acidic Zn Ni alloy plating bath w as reported, few of methods for determining Zn and Ni in alkaline Zn-Ni alloy plating bath w ere reported. W ith ( NH4 ) 2S2O4 as oxidant, a red complex w as res lted from Ni and 4 8 2 2 , ; C H N O in alkaline sol tion Ni content w as determined by colorimetry and Zn content w as calc lated by s btracting Ni content from the total content of Zn and Ni which w as determined . thro gh sing EDTA titration This method can also be sed in the determination of contents of Zn and Ni in Zn-Ni alloy coating. Being acc rate and fast, this method can meet the demands of practical prod ction. : - ; ; ; Keywords Zn Ni alloy analysis plating bath coating 1 2 - 2. 1 , 10%, 1) : 0. 2 g ,