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

Jinchao Dong; Aihui Liang; Yanghe Luo; Zhiliang Jiang

Arabian Journal of Chemistry (Dec 2019)

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

Jinchao Dong,
Aihui Liang,
Yanghe Luo,
Zhiliang Jiang

Affiliations

Jinchao Dong: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Conservation of Education Ministry, Guangxi Normal University, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China
Aihui Liang: Corresponding authors at: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Conservation of Education Ministry, Guangxi Normal University, Guilin 541004, China. Tel.: +86 0773 5846141; fax: +86 0773 5846201.; Key Laboratory of Ecology of Rare and Endangered Species and Environmental Conservation of Education Ministry, Guangxi Normal University, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China
Yanghe Luo: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Conservation of Education Ministry, Guangxi Normal University, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China
Zhiliang Jiang: Corresponding authors at: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Conservation of Education Ministry, Guangxi Normal University, Guilin 541004, China. Tel.: +86 0773 5846141; fax: +86 0773 5846201.; Key Laboratory of Ecology of Rare and Endangered Species and Environmental Conservation of Education Ministry, Guangxi Normal University, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China

Journal volume & issue: Vol. 12, no. 8
pp. 2293 – 2299

Abstract

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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 × 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. Keywords: Hg(II), Nanocatalysis, Resonance Rayleigh scattering

Published in Arabian Journal of Chemistry

ISSN: 1878-5352 (Print)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/arabian-journal-of-chemistry/

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