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Due to high toxicity, inorganic arsenic (iAs) species are the focus of monitoring effort worldwide. In this work arsenic was first extracted from rice by microwave-assisted digestion in HNO 3 –H 2 O 2 , during which As III was oxidized to As V . Silica-based strong anion exchange cartridges were used to separate As V from organic forms. After prereduction...
High levels of vanadium have been reported in groundwater (<0.05–5300μgL−1 V) from different parts of Argentina, yet no detailed study of vanadium speciation has been performed. A highly selective strong anion exchange – solid phase extraction (SAX-SPE) method was used (in-situ) for vanadium speciation analysis of groundwater samples from La Pampa - LP (General San Martin and Eduardo Castex) and...
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