期刊
ANALYTICAL SCIENCES
卷 30, 期 7, 页码 723-727出版社
JAPAN SOC ANALYTICAL CHEMISTRY
DOI: 10.2116/analsci.30.723
关键词
Polythymine; copper nanoparticles; label-free; fluorescence detection; lead ions
资金
- NSFC of China [21205035]
- Hunan Province [12JJ4017, 13JJ2123]
- Key Laboratory of Hunan University [2012014]
Polythymine (poly T)-templated copper nanoparticles (CuNPs) were demonstrated as novel and sensitive fluorescence probes for the detection of Pb2+ based on the fluorescence quenching effect. The as-prepared CuNPs displayed strong fluorescence emission. However, the fluorescence of CuNPs was readily quenched in the presence of Pb2+. These changes in fluorescence intensity of CuNPs allowed for the analysis of Pb2+ with rapidity (<10 min), simplicity (label-free), high sensitivity (LOD 0.4 nM), high selectivity (no interference from other metal ions) and at low-cost (without any labels and sophisticated operation). We validated the practicality of using CuNPs for the determination of Pb2+ in environmental samples through analyses of tap water samples.
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