Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 173, Issue -, Pages 99-104Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2016.08.049
Keywords
Melamine; Gold nanoparticles; UTP; Hydrogen-bonding
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Funding
- State Key Laboratory of Electroanalytical Chemistry (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences) [SKLEAC201312]
- Chongqing Fundamental and Advanced Research Project [cstc2013jcyjA50008]
- Science and Technology Research Program of the Municipal Education Committee of Chongqing [KJ1501017]
- Ministry Of Education Chunhui Project [Z2015151]
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A highly selective method was presented for colorimetric determination of melamine using uracil 5'-triphosphate sodium modified gold nanoparticles (UTP-Au NPs) in this paper. Specific hydrogen-bonding interaction between uracil base (U) and melamine resulted in the aggregation of AuNPs, displaying variations of localized surface plasmon resonance (LSPR) features such as color change from red to blue and enhanced localized surface plasmon resonance light scattering (ISPR-LS) signals. Accordingly, the concentration of melamine could be quantified based on naked eye or a spectrometric method. This method was simple, inexpensive, environmental friendly and highly selective, which has been successfully used for the detection of melamine in pretreated liquid milk products with high recoveries. (C) 2016 Published by Elsevier B.V.
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