Parameters for the reduction of Se(VI) to Se(IV) in HCl medium by heating in a microwave oven have been optimized. The reduction resulted to be quantitative applying 100% power, corresponding to 600 W heating for 2 min in 6 mol/L or for 3 min in 4 mol/L HCl. The behavior of selenomethionine and selenocystine under the optimized reduction conditions was studied in order to evaluate a possible interference of these selenium species in the determination of Se(VI). The final determination of Se(IV), and Se(VI) were done by hydride generation-atomic absorption spectrometry. The analytical merits of the method are reported. The method was applied to the selective determination of Se(IV), and Se(VI) in spiked river and lake water. © Springer-Verlag 1998.
All Science Journal Classification (ASJC) codes
Brunori, C., De La Calle-Guntiñas, M. B., & Morabito, R. (1998). Optimization of the reduction of Se(VI) to Se(IV) in a microwave oven. Fresenius Zeitschrift fur Analytische Chemie, 360(1), 26 - 30. https://doi.org/10.1007/s002160050636