Visual detection of melamine in milk products by label-free gold nanoparticles

被引：111
|
作者：
Guo, Liangqia [1 ,2 ]
Zhong, Jianhai [1 ,2 ]
Wu, Jinmei [1 ,2 ]
Fu, FengFu [1 ,2 ]
Chen, Guonan [1 ,2 ]
Zheng, Xiaoyan [3 ]
Lin, Song [3 ]
机构：
[1] Fuzhou Univ, Minist Educ, Key Lab Anal & Detect Food Safety, Fuzhou 350108, Fujian, Peoples R China
[2] Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou 350108, Fujian, Peoples R China
[3] Fujian Prov Cent Inspect Inst, Fuzhou 350002, Fujian, Peoples R China
来源：
TALANTA | 2010年 / 82卷 / 05期
关键词：
Melamine; Gold nanoparticles; Liquid milk; Infant formula; INFANT FORMULA; CYANURIC ACID; LIQUID-CHROMATOGRAPHY; DAIRY-PRODUCTS; COLOR-CHANGE; UV DETECTION; RAW-MILK; POWDER; SPECTROMETRY; EXTRACTION;
D O I：
10.1016/j.talanta.2010.07.035
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple, rapid, field-portable colorimetric method for the detection of melamine based on melamine-induced color change of label-free gold nanoparticles (Au NPs) was developed in this study. Melamine can induced the aggregation of Au NPs and results in the color change from wine-red to purple, which provided a platform for rapid and field-portable colorimetric detection of melamine. The proposed method can be used to detect melamine in liquid milk and infant formula with a detection limit of 1.0 and 4.2 ppm, respectively, within 30 min by naked eyes observation without the aid of any advanced instrument and the need of any complex pretreatment, and detect as low as 0.15 ppm of melamine in liquid milk and 2.5 ppm of melamine in infant formula with UV-vis-spectroscopy. The proposed method is promising for on-site screening of melamine adulterant in milk products. (C) 2010 Elsevier BM. All rights reserved.
引用
收藏
页码：1654 / 1658
页数：5
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