Direct atomic absorption determination of cadmium and lead in strongly interfering matrices by double vaporization with a two-step electrothermal atomizer

Thermal pretreatment of a sample using double vaporization in a two-step atomizer with a purged vaporizer makes possible the direct analysis of samples with strongly interfering matrices including solids. A porous-graphite capsule or a filter inserted into the vaporizer is used for solid sample anal...

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Published inSpectrochimica acta. Part B: Atomic spectroscopy Vol. 56; no. 3; pp. 261 - 274
Main Authors Grinshtein, Ilia L, Vilpan, Yuri A, Saraev, Alexei V, Vasilieva, Lubov A
Format Journal Article
LanguageEnglish
Published Elsevier B.V 29.03.2001
Subjects
Atomic absorption spectrometry
Cd determination
Graphite filter
Two-step atomizer
Cd determination
Graphite filter
Pb
Two-step atomizer
Atomic absorption spectrometry
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Summary:Thermal pretreatment of a sample using double vaporization in a two-step atomizer with a purged vaporizer makes possible the direct analysis of samples with strongly interfering matrices including solids. A porous-graphite capsule or a filter inserted into the vaporizer is used for solid sample analysis. The technique was used for the direct determination of Cd and Pb in human urine, potatoes, wheat, bovine liver, milk powder, grass–cereal mixtures, caprolactam, bituminous-shale and polyvinyl chloride plastic without chemical modification or any other sample pretreatment.
ISSN:0584-8547
1873-3565
DOI:10.1016/S0584-8547(00)00306-2