2010•Chinese Journal of Health Laboratory TechnologyRequires access

Simultaneous determineation of arsenic and selenium in tea by atomic fluorescence spectrometry

Xiaoyu Guo

Abstract

Objective:A method for the simultaneous determineation of arsenic and selenium in the tea by atomic fluorescence spectrometry has been developed.Methods:The sample was dissolved with HNO3-HCLO7,and analyzed by AFS-9130 double-channel atomic fluorescence spectometor.Results:Under the best condition,the relation standard deviation of arsenic and selenium was 5.58% and 5.92%.The detection limit of the atsenic and selenium was 0.0020 mg/kg and 0.0038 mg/kg.The coveries of arsenic and selenium ranged form 91.0% to 99.1% and 95.0% to 98.3%.Conclusion:The above method is highly sensilive,repeatable and applicable.

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Key concepts: Selenium, Arsenic, Chemistry, Detection limit, Environmental chemistry, Fluorescence spectrometry, Relative standard deviation, Fluorescence