Simplified kinetic-model describing the analyte losses during pre-atomization thermal-treatment in electrothermal atomic-absorption spectrometry

Slaveykova, Vera; Tsalev, Dimiter L

doi:10.1039/ja9920700365

Scientific article

English

Simplified kinetic-model describing the analyte losses during pre-atomization thermal-treatment in electrothermal atomic-absorption spectrometry

Contributors

Slaveykova, Vera

; Tsalev, Dimiter L

Published in

Journal of analytical atomic spectrometry, vol. 7, no. 2, p. 365-370

Publication date

1992

Abstract

A proposed kinetic model for elucidating the analyte pre-atomization losses in electrothermal atomic absorption spectrometry has been extended and developed further. The apparent activation energies, E(a)(loss), characterizing the process of analyte losses, have been derived from experimental data on absorbance and pre-treatment times at various pre-treatment temperatures for Sb, As, Pb and Sn, both in the absence and presence of a chemical modifier (20-mu-g of Mo(VI)). In the presence of a modifier, the maximum thermal treatment temperatures and the E(a)(loss) values were substantially increased and were of the same order, about 1300 K and 350 kJ mol-1, respectively, for the analytes As, Sb and Sn. For Pb, the corresponding values were 973 K and 60 kJ mol-1.

Note

27th international colloquium on spectroscopy ( 27th csi ), Jun 09-14, 1991, Bergen (Norway) Int union pure & appl chem

UNIGE affiliation entities

Not a UNIGE publication

Citation (ISO format)

SLAVEYKOVA, Vera, TSALEV, Dimiter L. Simplified kinetic-model describing the analyte losses during pre-atomization thermal-treatment in electrothermal atomic-absorption spectrometry. In: Journal of analytical atomic spectrometry, 1992, vol. 7, n° 2, p. 365–370. doi: 10.1039/ja9920700365

Article (Published version)

Identifiers

PID : unige:18007
DOI : 10.1039/ja9920700365

Additional URL for this publication

http://pubs.rsc.org/en/content/articlepdf/1992/ja/ja9920700365

Journal ISSN

0267-9477

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14/03/2023 17:06:34

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Simplified kinetic-model describing the analyte losses during pre-atomization thermal-treatment in electrothermal atomic-absorption spectrometry

Contributors

Published in

Publication date

Abstract

Note

UNIGE affiliation entities

Citation (ISO format)

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Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation