镀锌添加剂中EDTA含量的分光光度测定  

Determination of EDTA in additives for zinc plating with spectrophotometry

作　　者：金辉杰[1] 吴育忠[1] 

机构地区：[1]华南师范大学化学与环境学院,广东广州510631

出　　处：《电镀与涂饰》2008年第1期15-16,共2页Electroplating & Finishing

摘　　要：采用分光光度法测量镀锌添加剂中EDTA的含量,并与配位滴定法测得的同种样品中EDTA的含量接近。显色体系在室温时发色45min即可达到最大吸光度,并至少稳定24h。该法回收率为93.5%,具有操作简单,快速,准确,稳定及灵敏度高,检出限相对较低等特点。Spectrophotometry was used to determine the content of EDTA in additives for Zn plating, and the test result with this method is similar to that with complex titration. After the color system developing color only for 45 min, its absorbency reached the maximum and remains stable for 24 h. The method has 93.5% of recycle rate, high sensitivity and relatively low detection limit, and is simple, fast, accurate and stable.

关 键 词：镀锌 添加剂 EDTA 分光光度法 配位滴定 吸光度 

分 类 号：TG115.335[金属学及工艺—物理冶金]