摘要
将流动注射分析法与二苯碳酰二肼分光光度法联用，以混酸溶液做载流，建立电镀废水中铬（V1）的流动注射全自动在线分析方法．实验考察酸度、显色剂用量等影响因素，并确定了最佳管路．结果表明：所建立方法的线性范围为0．02～4．0mg·L^-1。相关系数R^2为0．9996，检出限为0．02mg·L^-1，标准加入回收率为97．04％，相当标准偏差为0．09％～0．91％（n=5）．
A new method, named flow injection automatic online analysis, was developed for the determination of hexa- valent chromium using mixed acid solution as carrier flow in electroplating wasterwater. This method combined the flow injection analysis and diphenylcarbohydrazide spectrophotometry method. Influencing factors such as acidity, addition a- mount of chromogenic agent were investigated, and the optimum piping was obtained. A linear range of 0. 02-4. 0 mg· L^-1 with good correlation coefficient （R2 =0. 999 6） was obtained for chromium determination, and the detection limit of this method was 0. 02 mg· L^-1. The recovery was 97.04% and the RSD ranged from 0. 09% to 0. 91% （n=5）.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2013年第6期687-690,共4页
Journal of Huaqiao University(Natural Science)
基金
福建省厦门市科技计划项目(3502Z20103034)
关键词
流动注射分析法
铬(VI)
电镀废水
二苯碳酰二肼
分光光度法
flow injection analysis
chromium （VI）
electroplating wastewater
diphenylcarbohydrazide
spectrophotom-etry
作者简介
通信作者：薛秀玲（1975-），女，副教授，主要从事环境分析化学及水处理工程的研究．E-mail：xiulingxue@163．com．
