《环境科学与工程前沿（英文）》
>> 2015年
第9卷
第6期
doi:
10.1007/s11783-014-0716-3
RESEARCH ARTICLE
Comparison of masking agents for antimony speciation analysis using hydride generation atomic fluorescence spectrometry
1. School of Chemistry and Environmental Engineering, Shanxi Datong University, Datong 037009, China.2. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
录用日期：
2014-05-22
发布日期：
2015-11-23
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摘要
A sensitive atomic spectrometric method for the redox speciation analysis of Sb in water is described. The proposed method is based on the selective generation of stibine from Sb(III) in a continuous flow system using non-dispersive atomic fluorescence spectrometry for detection. The effects of the HCl concentration on the fluorescence intensities of Sb(III) and Sb(V) were investigated. The results indicated that atomic fluorescence emission due to Sb(V) can constructively interfere with the determination of Sb(III). For the determination of Sb(III), four compounds were tested as masking agents to inhibit the generation of stibine from Sb(V). The effects of the concentrations of the masking agents and of HCl on the fluorescence signals from Sb(III) and Sb(V) were studied. The results indicated that citric acid and NaF can successfully suppress hydride generation from Sb(V). To evaluate the developed methodology and the influence of the matrix, the recovery of Sb(III) from natural water that was spiked with different Sb(III) and Sb(V) concentrations was tested.
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