0162370 - UIACH-O 20020021 RIV BG eng C - Conference Paper (international conference)
Dočekal, Bohumil
In situ collection of hydride forming elements for atomic spectrometry methods - New observations.
5th European Furnace Symposium and 10th International Solid Sampling Colloquium with Atomic Spectroscopy. Programme and Book of Abstracts. Blagoevgrad: SouthWest University, 2002, s. 38.
[European Furnace Symposium /5./ and International Solid Sampling Colloquium with Atomic Spectroscopy /10./. Blagoevgrad (BG), 01.09.2002-04.09.2002]
R&D Projects: GA ČR GA203/01/0453
Institutional research plan: CEZ:AV0Z4031919
Keywords : in situ trapping * hydride generation * atomic spectrometry
Subject RIV: CB - Analytical Chemistry, Separation

A prototype of miniature device for in situ collection of hydride forming elements is designed for determination of these elements in various atomization cells used in atomic spectrometry methods (AAS, AES and AFS). Performance of this device based on electrothermal vaporizer equipped with raw and modified graphite materials is reported. Optimization of trapping efficiency of analytes (As, Se) with respect to collection temperature, geometry and sort of graphite material and its modification by noble metals, to analytical figures of merit and to analytical lifetime of the vaporizer, to influence of carrier and stripping gases, to composition and related gas flow rates is discussed.
Permanent Link: http://hdl.handle.net/11104/0059688