| Bare gold nanoparticles as facile and sensitive colorimetric probe for melamine detection. | |
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MedLine Citation:
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PMID: 23037802 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this study, we demonstrate a more sensitive colorimetric assay for the detection of melamine based on the strong attraction between exocyclic amine groups of melamine and surface-bound AuCl(4)(-)/AuCl(2)(-) ions on bare gold nanoparticles prepared by the borohydride reduction method. This method is rather simple without further modification of gold nanoparticles and complicated pretreatment of samples. The detection limit of the method is 2.0 × 10(-7) g L(-1) for melamine in infant formula, which is much lower (about 1000-fold) than that of using citrate-capped GNPs as a colorimetric probe. The proposed scheme could be a good alternative means for on-site and real-time screening of melamine adulterant in infant formula without costly instruments. |
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Authors:
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Wei Chen; Hao-Hua Deng; Lei Hong; Zeng-Qiang Wu; Sheng Wang; Ai-Lin Liu; Xin-Hua Lin; Xing-Hua Xia |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-10-5 |
Journal Detail:
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Title: The Analyst Volume: - ISSN: 1364-5528 ISO Abbreviation: Analyst Publication Date: 2012 Oct |
Date Detail:
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Created Date: 2012-10-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372652 Medline TA: Analyst Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou 350004, China. chenandhu@163.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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