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Determination of Trace Tellurium in Urine by Extraction-Hydride Generation-Atomic Fluorescence Spectrometry

Lü Yun _ kai, SUN Han _ wen(Department of Chemistry, Hebei University, Baoding 071002, China)  
An analytical method is proposed for the determination of tellurium in urine by extraction- hydride generation-atomic fluorescence spectrometry with intermittent flow system. The effects of instrumental parameters and agents on the atomic fluorescence signal of tellurium have been studied and optimum conditions were recommended. The extraction behavior of tellurium in aqueous diethyldithiocarbamate(DDTC)- CCl4 system and reduction of tellurium(Ⅵ) were examined. Coexistent ions interference in the determination of tellurium and its elimination were discussed. The detection limit(3σ) of the method is 0.21 μg/L, the relative standard deviation is 1.24%, and the recovery is in the range of 92%~99%.
【Fund】: 河北省自然科学基金!资助项目(296064)
【CateGory Index】: O657.3
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