Rapid, sensitive and selective detection of pymetrozine using gold nanoparticles as colourimetric probes

被引：7

作者：

Bai, Lian-Yang ^{[1
]}

Zhang, Yu-Ping ^{[2
]}

Chen, Jun ^{[1
,2
]}

Zhou, Xiao-Mao ^{[1
]}

Hu, Lin-Feng ^{[2
]}

机构：

[1] Hunan Agr Univ, Pesticide Res Inst, Changsha 410128, Hunan, Peoples R China

[2] Henan Inst Sci & Technol, Xinxiang 453003, Peoples R China

来源：

MICRO & NANO LETTERS | 2010年 / 5卷 / 05期

基金：

中国国家自然科学基金;

关键词：

COLORIMETRIC DETECTION; SENSOR;

D O I：

10.1049/mnl.2010.0115

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The purpose of this study was to develop a sensitive and low-cost optical sensor for screening pymetrozine using unmodified gold nanoparticles (G NPs). The presence of pymetrozine could rapidly induce the aggregation of G NPs, thereby resulting in red to deep blue colour change. The concentration of pymetrozine was determined with a limit of detection lower than 1 x 10(-6) M by the naked eye and was further easily monitored by a UV-vis spectrometer. The highest selectivity was achieved in comparison with other 11 pesticides and the possible underlying mechanism was investigated in detail by the simultaneous addition of glutathione and pymetrozine in G NPs solution.

引用

页码：304 / 308

页数：5

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