In Situ Colorimetric Recognition of Melamine Based on Thymine Derivative-Functionalized Gold Nanoparticle

被引：23

作者：

Du, Jianjun ^{[1
]}

Wang, Zhenkuan ^{[1
]}

Peng, Xiaojun ^{[1
]}

Fan, Jiangli ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2015年 / 54卷 / 48期

关键词：

ENHANCED RAMAN-SCATTERING; VISUAL DETECTION; SENSITIVE DETECTION; RAW-MILK; LIQUID-CHROMATOGRAPHY; PLASMONIC PROPERTIES; PROBE; PRODUCTS; RESIDUES; SENSOR;

D O I：

10.1021/acs.iecr.5b02399

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A simple, fast, and convenient colorimetric sensing system is presented for melamine recognition in milk samples by thymine-derivative- (NT-) decorated gold nanoparticles (AuNPs), based on the complementary hydrogen bond between thymine and melamine, wherein the introduction of melamine causes a rapid and obvious red-to-blue color change. Therefore, the melamine content in milk can be qualitatively recognized by the naked eye and quantitatively measured by measuring absorbance. NT-AuNPs show excellent selectivity to melamine against any other tested molecules, anions, and metal ions, as well as very good sensitivity that can distinguish melamine-contaminated milk from safe milk with a limit of detection of 3.5 nM.

引用

页码：12011 / 12016

页数：6

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