2013•Chemistry and AdhesionRequires access
Determination of Arsenic in Sepiolite by Hydride Generation-Atomic Fluorescence Spectrometry
Ren Jian
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Abstract
The samples were dissolved in aqua regia,and the inorganic arsenic in sepiolite was determined by hydride generation-atomic fluorescence spectrometry with using thiourea and ascorbic acid as reductant.Under the optimized experimental condition,the concentration of arsenic in the range of 0～100ng/mL showed linearity to the fluorescence intensity with a correlation coefficient of 0.9998.The detection limit of arsenic was 0.6 ng/mL and the recovery was in the range of 102.5%～105%.