Characterisation of atmospheric semi-volatile organic compounds

Show simple item record Forbes, Patricia B.C. Karg, Erwin W. Geldenhuys, Genna-Leigh Nsibande, Sifiso Albert Zimmermann, Ralf Rohwer, Egmont Richard 2014-05-29T10:33:32Z 2014-05-29T10:33:32Z 2013-12
dc.description.abstract Atmospheric semi-volatile organic compounds (SVOCs), including polycyclic aromatic hydrocarbons (PAHs), are ubiquitous environmental pollutants, which may be present in the gaseous phase and adsorbed onto the surface of aerosol particles. A novel portable miniature denuder consisting of two multi-channel silicone rubber traps separated by a quartz fibre filter has been developed for such applications. It allows for the concentration of SVOCs in each phase to be determined, which is important for human health risk assessments. The overall particle transmission efficiency through the denuder was found to be 92 ± 4% for particles between 16 and 320 nm. SVOCs in the traps (gas phase) or on the filter (particle phase) are analysed by GC-MS, or by GCxGC-MS for enhanced separation capability. This enhances detection limits and allows for lower sampling flow rates and shorter sampling times. These denuders have been applied in studies involving the monitoring of emissions from domestic fires, vehicles and underground mine diesel engines. en_US
dc.description.librarian am2014 en_US
dc.description.sponsorship The German-South African Year of Science Programme, the CSIR and Plat Mines. en_US
dc.description.uri en_US
dc.identifier.citation Forbes, PBC, Karg, EW, Geldenhuys, G-L, Nsibande, SA, Zimmermann, R & Rohwer, ER 2013, 'Characterisation of atmospheric semi-volatile organic compounds', Clean Air Journal = Tydskrif vir Skoon Lug, vol. 23, no. 1, pp.  1-6. en_US
dc.identifier.issn 1017-1703
dc.language.iso en en_US
dc.publisher National Association for Clean Air en_US
dc.rights National Association for Clean Air en_US
dc.subject Denuder en_US
dc.subject Particulate matter (PM) en_US
dc.subject Aerosol en_US
dc.subject Silicone en_US
dc.subject GCxGC-MS en_US
dc.subject Air quality en_US
dc.subject Human health en_US
dc.subject Semi-volatile organic compounds (SVOCs) en_US
dc.subject Polycyclic aromatic hydrocarbons (PAHs) en_US
dc.title Characterisation of atmospheric semi-volatile organic compounds en_US
dc.type Article en_US

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