High time resolution and size-segregated analysis of aerosol-bound polycyclic aromatic hydrocarbons

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Author(s) Emmenegger, Christian, Kalberer, Markus, Samburova, Vera, Zenobi, Renato
Publication Type Journal Items, Publication Status: Published
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Title High time resolution and size-segregated analysis of aerosol-bound polycyclic aromatic hydrocarbons
Author(s) Emmenegger, Christian
Kalberer, Markus
Samburova, Vera
Zenobi, Renato
Journal or Series Title Environmental science & technology
Volume Number 39
Issue Number 11
Start Page 4213
End Page 4219
ISSN 0013-936X
1520-5851
Publisher American Chemical Society
Publication Place Washington, DC
Publication Date 2005-06
Abstract Polycyclic aromatic hydrocarbons (PAHs) are an ubiquitous class of compounds in the environment, mostly generated by anthropogenic processes. High time resolution measurements are necessary to gain further knowledge on the fate and diurnal pattern of these often carcinogenic and mutagenic compounds in the atmosphere. It is expected to find a strong correlation of the PAH levels with the strength and proximity to sources, as well as with meteorological parameters. To determine the fate of particle-bound PAHs, they were sampled in this study at an urban background site in Zurich, Switzerland, during summer 2002 and winter 2003. Particle-bound PAHs were collected with a rotating drum impactor and subsequently analyzed with two-step laser mass spectrometry. Using this combination of sampling and measurement, size-segregated (10-1.1, 1.1-0.3, and 0.3-0.1 mu m) and high time resolution (20 min) data were obtained. The pronounced diurnal cycle (with day/night ratios of 0.1) was only altered during intensive atmospheric mixing periods (resulting in day/night ratios of up to 8) by cleaner air from upper atmospheric layers which was mixed into the boundary layer. During summer, signal intensities due to particle-bound PAHs were about a factor of 2-10 lower than during winter.
DOI 10.1021/es048628n
Additional Notes Published online 23 April 2005
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03430
Organisational Unit(s)
NEBIS System Number 000033453
Source Database ID WOS-000229662200052
PP-17149
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@article{mmnggr2005,
  author = "Emmenegger, Christian and Kalberer, Markus and Samburova, Vera and Zenobi, Renato",
  title = "{H}igh time resolution and size-segregated analysis of aerosol-bound polycyclic aromatic hydrocarbons",
  journal = "Environmental science \& technology",
  year = 2005,
  volume = "39",
  number = "11",
  pages = "4213--4219",
  month = jun,
}


E-Citations record created: Mon, 04 Apr 2011, 15:57:34 CET