Electrothermal atomic absorption determination of ultratraces of suspended and dissolved species of elements in natural water

Direct and adsorption-atomic absorption procedures are proposed for the determination of suspended and dissolved species of elements in natural water. The procedures involve the fractional vaporization of solid samples (suspensions or adsorbent concentrates) in a graphite crucible atomizer with the...

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Bibliographic Details
Published in:Journal of analytical chemistry (New York, N.Y.) N.Y.), 2006-04, Vol.61 (4), p.329-333
Main Authors: Oreshkin, V. N., Tsizin, G. I.
Format: Article
Language:English
Subjects:
Absorption
Analysis
Atomizing
Chemical properties
Crucibles
Graphite
Vaporization
Water chemistry
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Summary:Direct and adsorption-atomic absorption procedures are proposed for the determination of suspended and dissolved species of elements in natural water. The procedures involve the fractional vaporization of solid samples (suspensions or adsorbent concentrates) in a graphite crucible atomizer with the simultaneous condensation of filtered and unfiltered element vapors on the surfaces of graphite rods placed above and below the crucible. The obtained microsample condensates were analyzed by independently heating the vaporization and atomization zones and localizing the element vapors in the isothermal analytical zone. The proposed approach makes it possible to use and compare various methods for suppressing matrix interference in a single analysis and to improve the performance characteristics of element determination.
ISSN:1061-9348
1608-3199
DOI:10.1134/S1061934806040058