The Analyst · 1986 · 137 citations · 0 references
Natural SciencesChemical EngineeringChemistryAnalytical ChemistryElemental AnalysisInorganic ChemistryAnalytical GeochemistryEnvironmental Analytical ChemistryEnvironmental Elemental AnalysisHeavy Metal AnalysisInorganic Elemental AnalysisAqueous Reaction MediaArsenic ChemistryArsenic Redox ChemistryArsenic RemovalAtomic Emission SpectrometryHeavy Metal DeterminationHydride Generation Atomic Absorption SpectrometryInductively Coupled Plasma Atomic Emission Spectroscopy
Continuous hydride generation, using sodium tetrahydroborate(III) as a reductant in conjunction with atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES), has been used to form arsines selectively from arsenate (AsV), arsenite (AsIII), monomethylarsonic acid (MMAA) and dimethylarsinic acid (DMAA). The reaction media studied have been shown to allow the rapid determination of AsIII alone, DMAA alone, AsIII+ AsV and “total” arsenic, i.e., AsIII+ AsV+ MMAA + DMAA. Interference effects produced by heavy metal ions are suppressed by the addition of masking agents.