title: A nanogold resonance Rayleigh scattering method for determination of trace As based on the hydride nanoreaction.
abstract: In H2 SO4 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.
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, China.
authors.forename: Caina
authors.initials: C
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, China.
authors.forename: Chunqiang
authors.initials: C
authors.lastname: Chen
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, China.
authors.forename: Zujun
authors.initials: Z
authors.lastname: Lu
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, China.
authors.forename: Qingye
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, China.
authors.forename: Meiling
authors.initials: M
authors.lastname: Tang
authors.affiliation: Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, China.
authors.forename: Aihui
authors.initials: A
authors.lastname: Liang
authors.affiliation: Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin, 541004, China.
authors.forename: Zhiliang
authors.initials: Z
authors.lastname: Jiang
mesh_terms: D000818:Animals; D001151:Arsenic / Q000032:analysis*; D001894:Borohydrides / Q000737:chemistry; D005504:Food Analysis / Q000379:methods; D006046:Gold; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008892:Milk / Q000737:chemistry; D012542:Scattering, Radiation
chemical_list: D001894:Borohydrides; D006046:Gold; C025364:sodium borohydride; D001151:Arsenic
keywords: As(III); hydride generation; nanogold reaction; resonance Rayleigh scattering