聚季铵盐为结合相的薄膜梯度扩散技术富集测量自来水中痕量Cr(VI)

郭连文; 陈宏; 张洋洋; 张梦晗; 张晗; 何蒙; 励建荣; 陈颖; 李敏镇

doi:10.13386/j.issn1002-0306.2014.20.006

聚季铵盐为结合相的薄膜梯度扩散技术富集测量自来水中痕量Cr(VI)

渤海大学化学化工与食品安全学院,渤海大学食品科学研究院
中国检验检疫科学研究院
鞍山嘉鲜农业发展有限公司

基金项目:

“十二五”国家科技支撑计划(2012BAD29B06)；辽宁省科学事业公益研究基金项目(2012003001)；辽宁省食品安全重点实验室开放课题(LNSAKF2011038)；

详细信息

作者简介:
郭连文 (1988-) , 女, 硕士研究生, 研究方向:环境分析、食品安全。;

陈宏 (1964-) , 女, 博士, 教授, 研究方向:环境分析、食品安全。;

励建荣 (1964-) , 男, 教授, 博导, 研究方向:水产品贮藏加工与食品安全。;

中图分类号: O652;R123.1
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出版历程
- 收稿日期: 2014-02-11

Determination of Cr (VI) in tap water with poly quaternary ammonium salt as a binding phase in diffusive gradients in thin-films

College of Chemistry, Chemical Engineering and Food Safety, Bohai University, Research Institute of Food Science, Bohai University
Chinese Academy of Inspection and Quarantine
Anshan Jiaxian Agricultural Development Co., Ltd.

摘要

摘要: 建立了以0.05mol/L聚季铵盐(PQAS)溶液为结合相的薄膜梯度扩散(DGT)装置(PQAS DGT)富集测量自来水中痕量Cr(VI)的分析方法。DGT法测得配制水中Cr(VI)的回收率为93.5%~102.4%,相对标准偏差(RSD)为2.25%~4.33%;测得自来水中Cr(VI)的浓度为2.68~3.45g/L,加标回收率为94.7%~102.6%;DGT方法对水中Cr(VI)的检出限为0.065g/L(采样48h),可应用于自来水中痕量Cr(VI)的定量检测与早期预警。
- 自来水 /
- 铬(VI) /
- 薄膜扩散梯度 /
- 聚季铵盐
Abstract: Cr (VI) in tap water was measured by the diffusive gradients in thin-films (DGT) technique using0.05mol/L poly quaternary ammonium salt (PQAS) solution as binding phase (PQAS DGT) . The recoveries of Cr (VI) in prepared solutions measured by PASP DGT were 93.5%¹02.4% with relative standard deviation (RSD) 2.25%⁴.33%. The concentration of Cr (VI) in tap water measured by PQAS DGT was 2.68³.45g/L with recoveries of 94.7%¹02.6%. The method detect limit for PQAS DGT was 0.065g/L (deployment time 48h) .Therefore, PQAS DGT could be used to measure trace Cr (VI) and gave an early alarm in tap water.
- tap water /
- Cr (VI) /
- diffusive gradients in thin-films /
- poly quaternary ammonium salt

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