胶束增溶分光光度法测定环境水样中Cr（Ⅵ）

胶束增溶分光光度法测定环境水样中Cr（Ⅵ）

肖国拾¹,来雅文²,邹连春³,陈博³

1.吉林大学测试科学实验中心，长春 130026;2.吉林大学地球探测科学与技术学院，长春 130026;3.吉林大学化学学院，长春 130026

收稿日期:2008-01-10 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26
通讯作者: 肖国拾

The Determination of Cr（Ⅵ）in Water Samples by Using Micelle Enhanced Spectrophotometry

XIAO Guo-shi¹, LAI Ya-wen², ZOU Lian-chun³, CHEN Bo³

1.Test Science Experiment Center，Jilin University, Changchun 130026，China;2.College of GeoExploration Science and Technology, Jilin University, Changchun 130026， China;3.College of Chemistry, Jilin University, Changchun 130026，China

Received:2008-01-10 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
Contact: XIAO Guo-shi

摘要/Abstract

摘要： 采用溴化十六烷基三甲铵为表面活性剂，与水杨基萤光酮形成胶束，提高水杨基萤光酮与Cr（Ⅵ）形成的有色配合物在水溶液中的溶解度。用二乙三氨五乙酸掩蔽Fe³⁺、Cr³⁺等干扰离子，无需分离直接测量水样中的Cr（Ⅵ）。测试结果表明，本方法标准偏差为0.246（n=10），相对标准偏差为2.56%；标准加入回收率为93.00%～110.00%，能满足环境水样中Cr（Ⅵ）的检测要求。

关键词: 分光光度法, 水杨基萤光酮, 溴化十六烷基三甲铵, Cr（Ⅵ）, 环境水样

Abstract: A method of spectrophotometric determination of trace Cr（Ⅵ）with salicyl-fluoroketone in CTMAB micelle was described. The coexist interferential ions such as Fe³⁺, Cr³⁺ and Co²⁺ etc. were masked by diethylenetriminepentaacetic acid (DTPA), then Cr（Ⅵ）was successfully determined. The standard deviation of 0.246(n=10)，relative standard deviation of 2.56%，and recovery ratio of 93.00%-110.0% were obtained. This result is satisfactory for determination trace Cr（Ⅵ）in environment water samples.

Key words: spectrophotometry, salicylfluoroketone, cetyltrimethylammonium bromide, Cr（Ⅵ）, environment water samples

中图分类号:

X132

肖国拾,来雅文,邹连春,陈博. 胶束增溶分光光度法测定环境水样中Cr（Ⅵ）[J]. J4, 2008, 38(5): 869-0872.

XIAO Guo-shi, LAI Ya-wen, ZOU Lian-chun, CHEN Bo. The Determination of Cr（Ⅵ）in Water Samples by Using Micelle Enhanced Spectrophotometry[J]. J4, 2008, 38(5): 869-0872.

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