An organically modified sol-gel membrane for detection of mercury ions by using 5,10,15,20-tetraphenylporphyrin as a fluorescence indicator

被引：24

作者：

Guo, Liangqia ^{[1
]}

Zhang, Wei ^{[1
]}

Xie, Zenghong ^{[1
]}

Lin, Xucong ^{[1
]}

Chen, Guonan ^{[1
]}

机构：

[1] Fuzhou Univ, Dept Chem, MOE Key Lab Anal & Detect Technol Food Safety, Fujian 350002, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2006年 / 119卷 / 01期

关键词：

organically modified sol-gel membrane; 5,10,15,20-tetraphenylporphyrin; fluorescence quenching; Hg2+;

D O I：

10.1016/j.snb.2005.12.009

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new optical sensor membrane for sensing of Hg2+ in aqueous solution has been developed by using (5,10,15,20-tetraphenylporphyrin, H2tpp) as a lipophilized indicator, which was dissolved in an organically modified sol-gel. The method for preparation of this organically modified sol-gel membrane and its characteristics were investigated in detail. The fluorescence quenching of the sol-gel membrane by Hg2+ showed a linear response over the Hg2+ concentration range of 5.0 x 10(-6) to 1.0 x 10(-4) mol/l with a detection limit of 3.6 x 10(-6) mol/l, and the good stability, reversibility, long lifetime and short response time could be obtained. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：209 / 214

页数：6

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