A highly sensitive and selective resonance Rayleigh scattering method for Hg2+ based on the nanocatalytic amplification

被引：5
作者：
Dong, Jinchao [1 ,2 ]
Liang, Aihui [1 ]
Luo, Yanghe [1 ,2 ]
Jiang, Zhiliang [1 ,2 ]
机构：
[1] Guangxi Normal Univ, Educ Minist, Key Lab Ecol Rare & Endangered Species & Environm, Guilin 541004, Peoples R China
[2] Guangxi Normal Univ, Guangxi Key Lab Environm Pollut Control Theory &, Guilin 541004, Peoples R China
来源：
ARABIAN JOURNAL OF CHEMISTRY | 2019年 / 12卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Hg(II); Nanocatalysis; Resonance Rayleigh scattering; ASSAY; OLIGONUCLEOTIDE; FLUORESCENCE; SPECTROMETRY; SYSTEM; PROBE; ION;
D O I：
10.1016/j.arabjc.2015.02.020
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In 0.2 mol/L HCl-0.22 mol/L HNO3 medium, trace Hg2+ catalyzed NaH2PO2 reduction of HAuCl4 to form gold nanoparticles (AuNPs), which exhibited a strong resonance Rayleigh scattering (RRS) effect at 370 nm. With increasing of [Hg2+], the RRS effect enhanced due to more AuNP generated from the catalytic reaction. Under the chosen conditions, the enhanced RRS intensity at 370 nm is linear to Hg2+ concentration in the range of 5.0-450 x 10(-9) mol/L, with a detection limit of 0.1 nmol/L. This RRS method was applied for the determination of Hg in water samples, with high sensitivity and good selectivity, and its results were agreement with that of atomic fluorescence spectrometry. (C) 2015 The Authors. Published by Elsevier B.V. on behalf of King Saud University.
引用
收藏
页码：2293 / 2299
页数：7
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