L-cysteine functionalized gold nanoparticles for the colorimetric detection of Hg2+ induced by ultraviolet light

被引：174

作者：

Chai, Fang ^{[1
,2
]}

Wang, Chungang ^{[1
]}

Wang, Tingting ^{[1
]}

Ma, Zhanfang ^{[3
]}

Su, Zhongmin ^{[1
]}

机构：

[1] NE Normal Univ, Fac Chem, Inst Funct Mat Chem, Changchun 130024, Peoples R China

[2] Harbin Normal Univ, Dept Chem, Harbin 150500, Peoples R China

[3] Capital Normal Univ, Dept Chem, Beijing 100037, Peoples R China

来源：

NANOTECHNOLOGY | 2010年 / 21卷 / 02期

基金：

中国国家自然科学基金;

关键词：

METAL-IONS; MERCURY(II) IONS; SENSITIVE DETECTION; BIOSENSORS; DNAZYME; DESIGN; SERS;

D O I：

10.1088/0957-4484/21/2/025501

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

A simple, cost-effective yet rapid and sensitive colorimetric sensor for the detection of Hg2+ using L-cysteine functionalized gold nanoparticles induced by ultraviolet radiation was developed. The sensitivity and selectivity of detection was also investigated. The L-cysteine modified gold nanoparticles can be induced to aggregate quickly in the presence of Hg2+, especially with the assistance of ultraviolet radiation. The presence of Hg2+ can be monitored by the colorimetric response of gold nanoparticles. The detection of Hg2+ could be realized, after measuring the UV-vis spectra, with a detection limit of 100 nM. The selectivity of this method has been investigated by other divalent metal ions. The effective colorimetric sensor can be used for on-site and real-time Hg2+ detection.

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页数：6

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