Determination of arsenate in aqueous samples by precipitation of the arsenic(V)—molybdate complex with tetraphenylphosphonium chloride and neutron activation analysis or hydride generation atomic absorption spectrometry

Direct analysis of natural waters for arsenic species by hydride generation atomic absorption spectrometry

“…Hydride generation (HG) has become the most essential technique in arsenic speciation and quantitation by atomic absorption spectrometry (AAS) [5][6][7]. The indirect HG-AAS methods include previous separation of the arsenic species by selective extraction, precipitation, flotation, and sorption [8][9][10][11][12][13]. The commonly used speciation techniques often involve a combination of chromatographic separation with HG-AAS [14][15][16].…”

Non-chromatographic hydride generation atomic spectrometric techniques for the speciation analysis of arsenic, antimony, selenium, and tellurium in water samples—a review

“…The organic phase was back-extracted with Cu(II) and determined by FI-HGAAS. Van Elteren et al [130] determined As(V) and As(III) by co-precipitating As(V) as molybdate complex with tetraphenylphosphoniumchloride and As(III) with dibenzyldithiocarbamate.…”

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

“…Also described for their selective determination were a FI-HGAAS method (369), ion-exclusion chromatography with on-line HGAAS (632), and a gas-phase molecular absorption method (633). Differentiation between As( V) and methylated arsenic acids was achieved by complexing As(V) with molybdate and then precipitating it with tetraphenylphosphonium chloride (634). Howard and Comber (635) described the determination of inorganic and organic As species by trapping the volatile hydrides prior to AAS measurement.…”