A model for the release of adsorbed molecules from the surfaces of airborne particulate matter based on liquid-phase desorption from amorphous carbon blacks

Environmental Health Perspectives
T H RisbyB S Dhingra

Abstract

The release of molecules adsorbed on the surfaces of amorphous carbon blacks has been studied using liquid-solid chromatography. Adsorbate molecules, adsorbents, and mobile phases were selected on the basis of their relevance as models for the release of toxic agents adsorbed on inhalable environmental particulate matter that originates from the incomplete combustion of organic materials. The presence of surface active groups on the carbon blacks has been shown to adsorb and retain adsorbate molecules selectively, and this selectivity can be reduced by competition for these active groups by the displacing solvent. Release is also governed by the surface coverage of the particles and increases as coverage approaches the monolayer.

References

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Citations

Jun 1, 1988·Environmental Health Perspectives·S S Sehnert, T H Risby
Dec 1, 1991·Environmental Health Perspectives·P P BolsaitisW G Thilly
Nov 29, 2002·American Journal of Physiology. Lung Cellular and Molecular Physiology·Beek Yoke ChinTerence H Risby
Nov 14, 1998·The American Journal of Physiology·B Y ChinA M Choi

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