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Valentin N. Oreshkin, Grigory I. Tsysin
Crucible atomizer with the
function of separating matrix components for atomic absorption determination of
elements in solid samples
Abstract
Abstract. A design
is proposed for a crucible electrothermal atomizer with a vertical arrangement
of evaporation, condensation, and atomization zones in graphite cylindrical
blocks with transverse heating. In such a cylindrical column, heat treatment
was carried out – the evaporation of a solid sample and the condensation of
vapors, and then the evaporation of the condensate into the atomization zone,
in which vapors are filtered through the porous medium
of the graphite filter into the analytical zone. Due to the separation of
matrix components and the reduction of interference, the metrological
characteristics of the determination of elements in solid organomineral samples
are improved.
Key words: electrothermal atomic absorption analysis, crucible atomizer,
interference suppression, determination of trace elements, analysis of natural
objects
Copyright (C) Chemistry Dept., Moscow State University, 2002
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