Determination of Se(IV) and Se(VI) in Italian mineral waters

Annali Di Chimica
T Ferri, Marco Frasconi

Abstract

This paper deals with determination of selenium and analysis of its speciation in some Italian mineral waters. Selenium was determined by differential pulse cathodic stripping voltammetry (DPCSV) even if square wave cathodic stripping voltammetry (SWCSV) was also taken into consideration. The selenium determined in the mineral waters here investigated is not over 600 ng L(-1); in three samples, it was found below the detection limit. Analysis of speciation revealed that Se(VI) is the highly prevailing form present: only two of the examined samples revealed a detectable amount (few ng L(-1)) of Se(IV). DPCSV made possible to detect, in two of the samples, the presence of a specie(s) able to interact with Se(IV). The apparent interaction constant for the adduct formation was evaluated and the species concentration determined. However, the nature of such compound(s) remains unknown.

References

Aug 26, 2000·The Journal of Nutrition·J W FinleyY Feng
Jun 21, 2002·Journal of the American College of Nutrition·P D Whanger
Jun 24, 2004·British Journal of Cancer·G F Combs
Nov 4, 2004·The British Journal of Nutrition·Margaret P Rayman
Mar 12, 2005·Analytical and Bioanalytical Chemistry·Oscar Muñiz-NaveiroPilar Bermejo-Barrera

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Citations

Dec 8, 2010·Environmental Health : a Global Access Science Source·Marco VincetiFeiyue Wang
May 26, 2015·Journal of Trace Elements in Medicine and Biology : Organ of the Society for Minerals and Trace Elements (GMS)·Marco VincetiBernhard Michalke
Dec 12, 2012·The Science of the Total Environment·Marco VincetiSaverio Stranges

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