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National Institute of Environmental Health Sciences

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Your Environment. Your Health.

Publication Detail

Title: Development and evaluation of a countercurrent parallel-plate membrane diffusion denuder for the removal of gas-phase compounds from vehicular emissions.

Authors: Papapostolou, Vasileios; Lawrence, Joy E; Ferguson, Stephen T; Wolfson, Jack M; Koutrakis, Petros

Published In Inhal Toxicol, (2011 Nov)

Abstract: Diffusion denuders have been commonly used to remove trace gases from an aerosol (mixture of gases and particles), while allowing the particles to remain suspended in air. We present the design and evaluation of a high-flow (16.7ýýýL minýýýýý) countercurrent parallel-plate membrane diffusion denuder that has high removal efficiencies for both non-reactive gases such as carbon monoxide (89%), as well as volatile organic compounds (80-85%) from an automobile exhaust. Particle losses were approximately 15% for particles around 100 nm in diameter. This denuder is suitable for toxicological tests involving both human and animal exposures to combustion aerosols. The denuder may also be used for other applications, for example, to reduce the effect of gas-phase sampling artifacts on particle composition.

PubMed ID: 22035125 Exiting the NIEHS site

MeSH Terms: No MeSH terms associated with this publication

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