info:eu-repo/semantics/article
Distribution of inorganic arsenic species in groundwater from Central-West Part of Santa Fe Province, Argentina
Fecha
2013-12Registro en:
Sigrist, Mirna Edit; Albertengo, Antonella; Brusa, Lucila; Beldomenico, Horacio Ramon; Tudino, Mabel Beatriz; Distribution of inorganic arsenic species in groundwater from Central-West Part of Santa Fe Province, Argentina; Pergamon-Elsevier Science Ltd; Applied Geochemistry; 39; 12-2013; 43-48
0883-2927
CONICET Digital
CONICET
Autor
Sigrist, Mirna Edit
Albertengo, Antonella
Brusa, Lucila
Beldomenico, Horacio Ramon
Tudino, Mabel Beatriz
Resumen
The distribution of inorganic arsenic species in groundwater used as drinking water supply by the peri-urban and rural population from central-western area of Santa Fe Province, Argentina, was studied. An analytical methodology based on an online system of atomic absorption spectrometry with hydride generation and flow injection (FI-HGAAS) was used for total inorganic arsenic determination. For speciation purposes, the distinction between As(V) and As(III) was performed through the on line coupling of FI-HGAAS to a solid phase system based on an anionic exchanger able to retain As(V) as oxyanion, allowing As(III) to be selectively determined. The concentration of As(V) was calculated as the difference between total arsenic and As(III) concentrations. Effects of matrix interference due to the nonselective behavior of the exchange resins were carefully laid. Results for 59 samples collected from 27 localities showed an almost exclusive predominance of pentavalent forms.