Electrothermal vaporization, part 1: gas phase chemistry

This manuscript is the first of a two-part publication on evaluation of vaporization and atomization processes in electrothermal vaporizers (ETV). Part 1 is specifically focused on gas phase (and heterogeneous) chemistry in ETVs. Molecular absorption spectroscopy and thermogravimetric analysis (in c...

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Bibliographic Details
Published in:Spectrochimica Acta Part B: Atomic Spectroscopy 2000-01, Vol.55 (1), p.3-35
Main Authors: Majidi, Vahid, Xu, Ning, Smith, Robert G.
Format: Article
Language:English
Subjects:
Chemical reactors
Gas-phase reactions
Graphite surface chemistry
Sample introduction
Vaporization mechanism
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Summary:This manuscript is the first of a two-part publication on evaluation of vaporization and atomization processes in electrothermal vaporizers (ETV). Part 1 is specifically focused on gas phase (and heterogeneous) chemistry in ETVs. Molecular absorption spectroscopy and thermogravimetric analysis (in conjunction with gas-phase mass spectrometry) are used to investigate the vaporization of Mg, Ca, Sr, Ba, Co and Ni (chloride and nitrate salts). Graphite, Pt, and Ta were used as substrate material for vaporizers to elucidate some observations of gas-phase chemistry. The experiments in Part I and II of this series are intentionally performed using wall vaporization to closely mimic the conditions used when ETV is employed as a sample introduction device.
ISSN:0584-8547
1873-3565
DOI:10.1016/S0584-8547(99)00163-9