Spectrochimica Acta. Part B: Atomic SpectroscopyThis is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

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On-line pre-reduction of pentavalent arsenicals by thioglycolic acid for speciation analysis by selective hydride generation-cryotrapping-atomic absorption spectrometry.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
An improvement of current method of selective hydride generation based on pre-reduction for differentiation of tri- and pentavalent arsenicals is described, applied for the oxidation state specific speciation analysis of inorganic, mono-, di- and trimethylated arsenicals with minimum sample pretreatment using atomic absorption spectrometry with the multiatomizer. The preconcentration and separation of arsine, methylarsine, dimethylarsine and trimethylarsine is then carried out by means of cryotrapping. Presented study shows that 2% (m/v) L-cysteine hydrochloride monohydrate (L-cys) currently used for off-line pre-reduc...
Source: Spectrochimica Acta. Part B: Atomic Spectroscopy - June 1, 2008 Category: Physics Authors: Musil S, Matoušek T Tags: Spectrochim Acta Part B At Spectrosc Source Type: journals

Oxidation State Specific Generation of Arsines from Methylated Arsenicals Based on L- Cysteine Treatment in Buffered Media for Speciation Analysis by Hydride Generation - Automated Cryotrapping - Gas Chromatography-Atomic Absorption Spectrometry with the Multiatomizer.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
An automated system for hydride generation - cryotrapping- gas chromatography - atomic absorption spectrometry with the multiatomizer is described. Arsines are preconcentrated and separated in a Chromosorb filled U-tube. An automated cryotrapping unit, employing nitrogen gas formed upon heating in the detection phase for the displacement of the cooling liquid nitrogen, has been developed. The conditions for separation of arsines in a Chromosorb filled U-tube have been optimized. A complete separation of signals from arsine, methylarsine, dimethylarsine, and trimethylarsine has been achieved within a 60 s reading window...
Source: Spectrochimica Acta. Part B: Atomic Spectroscopy - March 1, 2008 Category: Physics Authors: Matoušek T, Hernández-Zavala A, Svoboda M, Langrová L, Adair BM, Drobná Z, Thomas DJ, Stýblo M, Dědina J Tags: Spectrochim Acta Part B At Spectrosc Source Type: journals