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Citation: ZHANG Wang-Bing. Determination of Sb in Environment Samples by Atomic Fluorescence Spectrometry Coupled with Electrochemical Hydride Generation[J]. Chinese Journal of Applied Chemistry, ;2009, 26(6): 738-741. shu

Determination of Sb in Environment Samples by Atomic Fluorescence Spectrometry Coupled with Electrochemical Hydride Generation

ZHANG Wang-Bing ^,

1.
Department of Applied Chemistry, Anhui University of Technology, Maanshan 243002

Corresponding author: ZHANG Wang-Bing,
Received Date: 11 May 2008
Available Online: 20 September 2008
Fund Project: 安徽省科技攻关计划(08010304219)资助项目 (08010304219)

A novel sample introduction system for the determination of Sb by electrochemical hydride generation in a phosphate buffer solution(PBS) was developed.It was found that using neutral PBS as electrolytic solution could markedly increase the fluorescence intensity of Sb(Ⅲ) and suppress totally the signal of Sb(Ⅴ).The valence analysis of Sb could be carried out in buffer solution.Moreover,it has some merits like reducing self-erodible effect of the cathode material,prolonging the lifetime of the cell and increasing the signal stability.The traditional thin-type cell was improved and a new cell with screw-thread was developed.Assembly time of the disk cell was only about 1 min,shortened largely compared with that for the traditional cells of about 20 min.Furthermore,sealing performance of this cell was better than that of the traditional electrolytic.The detection limit(3σ) and the precisions(n=11) for 20 μg/L Sb(Ⅲ) were 0.038 μg/L Sb(Ⅲ) and 3.9%,respectively.This system has been applied satisfactorily to the determination of Sb in soil samples.
- atomic fluorescence spectrometry,
- electrochemical hydride generation,
- electrolyte,
- neutral pho-sphate buffer solution,
- Sb(Ⅲ),
- Sb(Ⅴ)
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