摘要
在阳离子表面活性剂ＣＴＭＡＢ存在和ｐＨ８．７－９．８范围内，锌与水杨基荧光酮，柠檬酸形成稳定的１∶１∶２混配配合物，其最大吸收位于５６０ｎｍ，表观摩尔吸光系数为１．３×１０５Ｌ·ｍｏｌ－１·ｃｍ－１．锌量在０～１５μｇ／２５ｍＬ范围内符合比耳定律．方法用于环境水标样及人发标样中锌的测定，获得满意结果．
The colour reaction of Zinc with SAF and Citric acid in the presence of CTMAB and pH9.1 has been studied. The apparent molar absorptivity of the complex is 1.3×10 5 L·mol -1 ·cm -1 at 560nm. Molar ratio of zinc to SAF and citric acid is 1∶1∶2. Beers Law is obeyed in the range of 0￣15μg Zn/25mL. The method has been successfully applied to the determination of zinc in human hair and environmental water sample.
出处
《分析科学学报》
CAS
CSCD
1997年第4期325-327,共3页
Journal of Analytical Science
关键词
锌
水杨基荧光酮
分光光度法
CTMB
Zinc, Salicylfluorone, Quaternary Complex, Spectrophotometry
