Laser Mass Spectrometric Analysis of Organic Atmospheric Aerosols. 2. Elucidation of Urban Air Pollution Processes
The dynamic behavior of aerosol-bound polycyclic aromatic hydrocarbons (PAHs) and other polycyclic aromatic compounds (PACs) in urban air was studied over the course of several whole days, both next to a street with heavy traffic and in a city park. Two-step laser mass spectrometry, a highly sensiti...
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| Veröffentlicht in: | Environmental science & technology 2000-06, Vol.34 (11), p.2184-2189 |
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| container_title | Environmental science & technology |
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| creator | Haefliger, Olivier P Bucheli, Thomas D Zenobi, Renato |
| description | The dynamic behavior of aerosol-bound polycyclic aromatic hydrocarbons (PAHs) and other polycyclic aromatic compounds (PACs) in urban air was studied over the course of several whole days, both next to a street with heavy traffic and in a city park. Two-step laser mass spectrometry, a highly sensitive and selective technique, allowed measurements with 15 min time resolution. Large variations in particle concentration and chemical composition were observed, reflecting the contributions from Diesel trucks and gasoline-powered cars to urban aerosols. These sources were clearly identified using specific mass spectral patterns. Photochemically induced decay of oxygenated polycyclic aromatic hydrocarbons (OPAHs) was observed to occur within only a few hours. Rapid speciation of aerosol-bound organic carbon is now possible to complement data on routinely monitored atmospheric pollutants. |
| doi_str_mv | 10.1021/es991123q |
| format | Article |
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| ispartof | Environmental science & technology, 2000-06, Vol.34 (11), p.2184-2189 |
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| language | eng |
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| source | ACS Publications |
| subjects | Aerosols Air pollution Applied sciences Atmospheric aerosols Atmospheric pollution Chemistry Exact sciences and technology Hydrocarbons Lasers Pollution Pollution sources. Measurement results Transports |
| title | Laser Mass Spectrometric Analysis of Organic Atmospheric Aerosols. 2. Elucidation of Urban Air Pollution Processes |
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