Resonance Rayleigh Scattering and SERS Spectral Detection of Trace Hg(II) Based on the Gold Nanocatalysis

作者：Ouyang, Huixiang; Li, Chongning; Liu, Qingye; Wen, Guiqing; Liang, Aihui^*; Jiang, Zhiliang^*

来源：Nanomaterials, 2017, 7(5): 114.

DOI：10.3390/nano7050114

• mercury ion
• gold nanoparticle
• nanocatalysis
• resonance Rayleigh scattering
• SERS

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.

• 出版日期2017-5
• 单位广西师范大学; 百色学院