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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Highly selective and ultrasensitive detection of nitrite based on fluorescent gold nanoclusters
Talanta, Volume 104, Year 2013
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Description
Near-infrared fluorescent gold nanoclusters (AuNCs) were prepared by sonochemical method and applied for the selective and sensitive detection of nitrite. The fluorescence of AuNCs could be selectively quenched by nitrite, and the mechanism was discussed in detail. The fluorescence intensity decreased linearly upon the increasing concentration of nitrite in a wide range of 2.0×10-8 M to 5.0×10-5 M. The detection limit was only 1.0 nM (S/N=3), which was much lower than the maximum admissible concentration of 2.2 μM required by the European Community. The proposed method was also applied for the determination of nitrite in real water samples. The present method exhibited excellent analytical performances, such as wide detection range, good selectivity, high sensitivity, and the applicability in neutral medium. © 2012 Elsevier B.V.
Authors & Co-Authors
Liu, Hongying
China, Nanjing
Nanjing University
Yang, Guohai
China, Nanjing
Nanjing University
Abdel-Halim, Essam Sayed
Saudi Arabia, Riyadh
College of Sciences
Zhu, Junjie
China, Nanjing
Nanjing University
Statistics
Citations: 73
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.talanta.2012.11.020
Research Areas
Environmental