Journal
NANOMATERIALS
Volume 7, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/nano7050114
Keywords
mercury ion; gold nanoparticle; nanocatalysis; resonance Rayleigh scattering; SERS
Categories
Funding
- National Natural Science Foundation of China [21667006, 21367005, 21465006, 21477025, 21567001, 21567005]
- Natural Science Foundation of Guangxi [2013GXNSFFA019003]
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Mercury (Hg) is a heavy metal pollutant, there is an urgent need to develop simple and sensitive methods for Hg(II) in water. In this article, a simple and sensitive resonance Rayleigh scattering (RRS) method was developed for determination of 0.008-1.33 mu mol/L Hg, with a detection limit of 0.003 mu mol/L, based on the Hg(II) regulation of gold nanoenzyme catalysis on the HAuCl4-H2O2 to form gold nanoparticles (AuNPs) with an RRS peak at 370 nm. Upon addition of molecular probes of Victoria blue B (VBB), the surface-enhanced Raman scattering (SERS) peak linearly decreased at 1612 cm(-1) with the Hg(II) concentration increasing in the range of 0.013-0.5 mu mol/L. With its good selectivity and good accuracy, the RRS method is expected to be a promising candidate for determining mercury ions in water samples.
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