Abstract
Inorganic arsenic, MMA, DMA and arsenobetaine (Asβ) were separated by the use of cation and anion exchange chromatography combined with neutron activation. Two complementary approaches were used: firstly, authentic, non-irradiated arsenic compounds, either singly or in mixtures, were separated and NAA of the fractions used as an element specific detection method. Secondly, the arsenic compounds were neutron irradiated under different conditions and for different times and the products separated and quantified. The76As labeled species (mono-, di and trimethylated) were then additionally used to calibrate and improve the column separations. Using the separations developed, arsenic species in samples of shrimps and the standard reference material DORM-1 were determined, after an extraction step, using ion exchange chromatography followed by INAA of the fractions collected.
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Šlejkovec, Z., Byrne, A.R. & Dermelj, M. Neutron activation analysis of arsenic species. Journal of Radioanalytical and Nuclear Chemistry, Articles 173, 357–364 (1993). https://doi.org/10.1007/BF02043038
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DOI: https://doi.org/10.1007/BF02043038