An organically modified sol-gel membrane for detection of mercury ions by using 5,10,15,20-tetraphenylporphyrin as a fluorescence indicator
An organically modified sol-gel membrane for detection of mercury ions by using 5,10,15,20-tetraphenylporphyrin as a fluorescence indicator
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DOI：
10.1016/j.snb.2005.12.009
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发表时间：
2006-11-24
影响因子：
8.4
通讯作者：
Chen, Guonan
中科院分区：
文献类型：
--
作者：
Guo, Liangqia;Zhang, Wei;Chen, Guonan
以(5，10，15，20-四苯基卟啉，H_2tpp)为亲脂指示剂，溶解在有机改性的溶胶-凝胶中，制备了一种新型的汞离子传感膜。详细研究了有机改性溶胶-凝胶膜的制备方法及其性能。Hg2+对溶胶-凝胶膜的荧光猝灭在5.0×10~(-6)~1.0×10~(-4)m ol/L范围内呈良好的线性关系，检测下限为3.6×10~(-6)m o l/L，具有良好的稳定性、可逆性、长寿命和短响应时间。(C)2005 Elsevier B.V.保留所有权利。
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.