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Determination of tetraalkyllead compounds in gasoline by liquid chromatography-atomic absorption spectrometry

Analytical Chemistry

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Abstract

A liquid chromatography-atomic absorption spectrometry (LC-AAS) hybrid analytical technique is presented for metal speciation measurements on complex liquid samples. The versatility and inherent metal selectivity of the technique are Illustrated by the rapid determination of five tetraalkyllead compounds in commercial gasoline. Separation of the individual tetraalkyllead species is achieved by reversed-phase liquid chromatography using an acetonitrile/water mobile phase. The effluent from the liquid Chromatograph Is introduced directly into the aspiration uptake capillary of the nebulizer of an air/acetylene flame atomic absorption spectrometer. Spectral interferences due to coeluting hydrocarbon matrix constituents were not observed at the 283.3-nm resonance line of lead used for analysis. Detection limits of this LC-AAS hydrid analytical technique, based on a 20-??L injection, are approximately 10 ng Pb for each tetraalkyllead compound.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Determination of tetraalkyllead compounds in gasoline by liquid chromatography-atomic absorption spectrometry
Series title:
Analytical Chemistry
Volume
53
Issue:
11
Year Published:
1981
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Analytical Chemistry
First page:
1632
Last page:
1636
Number of Pages:
5