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Chemical analysis of main arsenic species in mixtures of As and AsF6
Authors:M Ponikvar  B Pihlar
Institution:a Department of Inorganic Chemistry, Jo?ef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
b Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
Abstract:Known analytical techniques are not applicable to the accurate and precise determination of AsV and total arsenic (Ast) in the mixtures of AsIII and AsF6. For this reason, an accurate and precise analytical procedure for determination of the content of AsV and Ast in the range of 5-10 mg of As with a relative standard deviation (R.S.D.) smaller than 0.4% was developed. The results were proved by the determination of AsIII by titration with KBrO3 and gravimetric determination of AsF6 species.
Keywords:Elemental chemical analyses  Arsenic species  Arsenic(III)  AsF6&minus  
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