Speciation analysis of selenium in natural water using square-wave voltammetry after preconcentration on activated carbon

Franco Bertolino, Angel Alberto Jesus Torriero, Eloy Salinas, Roberto Olsina, Luis D Martinez, Julio Raba

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44 Citations (Scopus)

Abstract

A simple, accurate, sensitive and selective method was described for rapid detn. of ultra-trace quantities of Se. Se(IV) was collected on activated C (a.c.) after redn. to elemental Se by L-ascorbic acid. The collected Se was then dissolved by oxidn. reaction with bromate in acidic media and was indirectly detd. through the bromide formation using square-wave voltammetry (OSWV). The total amt. of Se(IV) and Se(VI) was collected on a.c. after its redn. by hydrazine. Se in the range 0.01-20 micro g L-1 could be detd. by this method. The method was used to the detn. of Se(IV) and Se(VI) in natural H2O with satisfactory results. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)32 - 38
Number of pages7
JournalAnalytica Chimica Acta
Volume572
Issue number1
Publication statusPublished - 2006
Externally publishedYes

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