Study of the Effectiveness of Arsenic Hydride Generation from Various Arsenic Species with the Use of Some Borane Reducing Agents by Inductively Coupled Plasma Atomic Emission Spectrometry

The application of H 3 B-NH(CH 3 ) 2, H 3 B-NH 2 C(CH 3 ) 3 and NaBH 4 as derivatizing reagents in hydride generation from As(III), As(V), and As(V)-dimethyl forms was investigated. The effects of hydrochloric, acetic, and citric acids on the As responses were studied by using inductively coupled pl...

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Bibliographic Details
Published in:Analytical letters 2008-01, Vol.41 (14), p.2759-2772
Main Authors: Welna, Maja, Zyrnicki, Wieslaw
Format: Article
Language:English
Subjects:
Amineboranes
Analytical chemistry
Arsenic
arsenic species
Chemistry
Citric acid
Emission analysis
Exact sciences and technology
H lines
hydride generation
Hydrides
Inductively coupled plasma
sodium tetrahydroborate
Spectrometric and optical methods
Spectrometry
Spectroscopy
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Summary:The application of H 3 B-NH(CH 3 ) 2, H 3 B-NH 2 C(CH 3 ) 3 and NaBH 4 as derivatizing reagents in hydride generation from As(III), As(V), and As(V)-dimethyl forms was investigated. The effects of hydrochloric, acetic, and citric acids on the As responses were studied by using inductively coupled plasma optical emission spectrometry. Intensities of As, B, and H lines, and the pH of the reaction mixture were recorded. The effectiveness of the hydride generation depended on the arsenic form and changed with reductant type as well as with kind and concentration of the acids. The H line intensities were different from those expected from stechiometric reactions between the reductants and acids.
ISSN:0003-2719
1532-236X
DOI:10.1080/00032710802363602