Optical rubbery ormosils sensor for the detection of ammonia

被引：10

作者：

Chen, X

Dai, YJ

Li, Z

Zhang, ZX

Wang, XR ^{[1
]}

机构：

[1] Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Key Lab Analyt Sci MOE, Xiamen 361005, Peoples R China

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 2001年 / 370卷 / 08期

关键词：

D O I：

10.1007/s002160100817

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Rubbery ormosil films with immobilized aminofluorescein (AF) were investigated to develop an optochemical sensor for the determination of ammonia in water. The get precursors with tetramethoxyilane (TMOS) and dimethyldimethoxysilane (DiMeDMOS) were deposited on glass supports. and characterized in terms of response to pH. and to dissolved ammonia at constant pH. After preconditioning the sensing film was stable for 6 months. The detection limit for ammonia in water was 0.2 mug mL(-1) (S/N 2). the response being linearly dependent on concentration in the range of 0.5 to 80 mug mL(-1) ammonia. The response time was less than 5 min. The effects of sodium chloride concentration, temperature. and coexisting metal ions and compounds were investigated.

引用

页码：1048 / 1051

页数：4

共 13 条

[1] CONTROLLED-PORE GLASSES EMBEDDED IN PLASTIC OPTICAL FIBERS FOR GASTRIC PH SENSING PURPOSES [J].