Abstract：A photochemical sensor for the determination of Hg2+ consisting of organically modified silicates (ormosils) was developed. Hg2+-sensitive fluorescent sol-gel films were prepared by co-condensation of tetramethoxysilane (TMOS) and dimethyldimethoxysilane (DMOS), and the fluorescent indicator 5,10,15,20-tetra (p-sulfonatophenyl)porphyrin sodium was embedded in sol-gel in the form of ion pairs with cetyltrimethyl ammonium bromide. The optimization condition of preparation and response performance of sol-gel membrane were investigated. The experimental results showed a linear range of Hg2+ concentrations from 1.0×10-5 to 1.0×10-4 mol·L-1 in a Tris-HCl buffer at pH 8.0 with fast response and good repetition. The indicators in the sol-gel membrane did not leak out and the sensor showed good selectivity over other metal ions.
郭良洽，张维，颜健峰，林旭聪，谢增鸿*,陈国南. 一种基于有机杂化溶胶-凝胶Hg2+敏感膜的研究[J]. 光谱学与光谱分析, 2006, 26(07): 1281-1284.
GUO Liang-qia, ZHANG Wei, YAN Jian-feng, LIN Xu-cong, XIE Zeng-hong*, CHEN Guo-nan . Research of Hg2+ Sol-Gel Membrane Made of Organically Modified. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(07): 1281-1284.
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