A nanogold resonance Rayleigh scattering method for determination of trace As based on the hydride nanoreaction

In H2SO4 solution, As(III) was reduced to arsine (AsH3) by NaBH4, and was absorbed in HAuCl4 solution to form nanogold particles (NGs) that exhibited a resonance Rayleigh scattering (RRS) effect at 370 nm. Under the selected conditions, when the As(III) concentration increased the RRS peak also incr...

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Bibliographic Details
Published in:Luminescence (Chichester, England) England), 2015-09, Vol.30 (6), p.847-852
Main Authors: Jiang, Caina, Chen, Chunqiang, Lu, Zujun, Liu, Qingye, Tang, Meiling, Liang, Aihui, Jiang, Zhiliang
Format: Article
Language:English
Subjects:
Animals
Arsenic - analysis
As(III)
Borohydrides - chemistry
Correlation
Food Analysis - methods
Formations
Gold
hydride generation
Hydrides
Limit of Detection
Luminescence
Metal Nanoparticles - chemistry
Microscopy, Electron, Scanning
Milk
Milk - chemistry
nanogold reaction
Nanostructure
Rayleigh scattering
resonance Rayleigh scattering
Resonance scattering
Scattering, Radiation
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Summary:In H2SO4 solution, As(III) was reduced to arsine (AsH3) by NaBH4, and was absorbed in HAuCl4 solution to form nanogold particles (NGs) that exhibited a resonance Rayleigh scattering (RRS) effect at 370 nm. Under the selected conditions, when the As(III) concentration increased the RRS peak also increased due to the formation of more NGs. There was a linear correlation between RRS intensity and As(III) concentration in the range 6–1000 ng/mL, with a detection limit of 3 ng/mL. This new hydride generation–nanogold reaction RRS (HG–NG RRS) method was applied to determine trace amounts of As in milk samples, with satisfactory results. Copyright © 2015 John Wiley & Sons, Ltd.
ISSN:1522-7235
1522-7243
DOI:10.1002/bio.2831