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This article presents different strategies for separation and pre-concentration of arsenic species based on classical ion-exchange column chromatography by means of the strong cation or anion-exchange resins used in the analytical atomic spectrometry in the last 30 years. In addition, some aspects of sample pre-treatment, including preservation and extraction of arsenic species, are highlighted.
HPLC-ICP-MS using different separation mechanisms: reversed-phase, anion-exchange, cation-exchange, and size-exclusion was revisited and comprehensively evaluated using a set of 14 standards of arsenic species. An analytical protocol based on three-dimensional (size-exclusion-anion-exchange-reversed-phase) chromatography, capable of isolating individual arsenocompounds from a biological sample, and...
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