期刊
TALANTA
卷 202, 期 -, 页码 274-278出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2019.05.004
关键词
Formaldehyde; Surface-enhanced Raman scattering; Localized surface plasmon resonance; Silver nanoparticles
资金
- Projects of International Science and Technology Cooperation and Exchanges of Sichuan Province of China [2014HH0021]
- Key Program of Sichuan Province of China [2018FZ0005]
A simple and reliable method was developed by combining redox reaction with surface-enhanced Raman scattering (SERS) for the indirect detection of formaldehyde (FA). Silver nanoparticles (AgNPs) can be generated from the reaction between the silver ammonia solution containing silver nanoclusters (AgNCs@Tollens) and FA, which can improve the SERS signal of rhodamine 6G (R6G). The detection principle was based on the enhancement of the SERS signal of R6G caused by the increase in the intensity of localized surface plasmon resonance (LSPR) upon the reduction of AgNCs@Tollens by FA. This method exhibits high sensitivity and selectivity for the detection of FA with a linear range from 5 mu M to 160 mu M and a limit of detection (LOD) of 2.5 mu M. The proposed method was successfully used for the detection of FA released from furniture panels with a recovery rate of 95-100%.
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