| Title: | Sampling gaseous oxidation products of aromatic compounds in gas/particle separation systems |
| Author(s): | Sax M; Kalberer M; Zenobi R; |
| Address: | "Department of Chemistry and Applied Bioscience, ETH Honggerberg, CH-8093 Zurich, Switzerland" |
| ISSN/ISBN: | 1464-0325 (Print) 1464-0325 (Linking) |
| Abstract: | "In this study we performed a direct comparison between two different ambient air samplers to characterize their performance in sampling oxidized gaseous organic compounds, known as oxidation products of aromatics. We investigated compounds with a variety of functional groups and vapor pressures. A polyurethane foam (PUF) adsorbent and an annular diffusion denuder sampler were operated along with particle filters. In both systems the sampling devices were liquid-extracted, followed by derivatization and analysis by GC-MS. The PUF system works very well for aromatic as well as non-aromatic compounds, whereas the denuder shows smaller collection efficiencies for highly volatile non-aromatic compounds. In addition, the sampling efficiencies in the PUF set-up are in good agreement with the calculated vapor pressures of the compounds and also the particle phase is not affected by most compounds" |
| Keywords: | "Adsorption Air Pollutants/*analysis Construction Materials Environmental Monitoring/*instrumentation/methods Gas Chromatography-Mass Spectrometry Hydrocarbons, Aromatic/*analysis Oxidation-Reduction Polyurethanes Volatilization;" |
| Notes: | "MedlineSax, Mirjam Kalberer, Markus Zenobi, Renato eng Comparative Study Research Support, Non-U.S. Gov't England 2003/11/01 J Environ Monit. 2003 Oct; 5(5):103N-107N. doi: 10.1039/b309158a" |
