Seasonal and diurnal characteristics of water soluble inorganic compounds in the gas and aerosol phase in the Zurich area
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Authors
Fisseha, Rebeka
Dommen, Josef
Gutzwiller, Lukas
Emmenegger, C.
Kalberer, Markus
Baltensperger, Urs
Author (Corporation)
Publication date
2006
Typ of student thesis
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Type
01A - Journal article
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Parent work
Atmospheric Chemistry and Physics
Special issue
DOI of the original publication
Link
Series
Series number
Volume
6
Issue / Number
7
Pages / Duration
1895-1904
Patent number
Publisher / Publishing institution
Copernicus
Place of publication / Event location
Göttingen
Edition
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Abstract
Gas and aerosol samples were taken using a wet effluent diffusion denuder/aerosol collector (WEDD/AC) coupled to ion chromatography (IC) in the city of Zurich, Switzerland from August to September 2002 and in March 2003. Major water soluble inorganic ions; nitrate, sulfate, and nitrite were analyzed online with a time resolution of two hours for the gas and aerosol phase. The fraction of water soluble inorganic anions in PM10 varied from 15% in August to about 38% in March. Seasonal and diurnal variations of nitrate in the gas and aerosol phase were observed with more than 50% of the total nitrate in the gas phase during August and more than 80% of nitrate in the aerosol phase during March exceeding the concentration of sulfate by a factor of 2. Aerosol sulfate, on the other hand, did not show significant variability with season. However, in the gas phase, the SO2 concentration was 6.5 times higher in winter than in summer. Nitrous acid (HONO) also showed a diurnal variation in both the gas and aerosol phase with the lowest concentration (0.2–0.6 µg/m³) in the afternoon. The primary pollutants, NO, CO and SO2 mixing ratios were often at their highest between 04:00–10:00 local time due to the build up of fresh vehicle emission under a nocturnal inversion.
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Subject (DDC)
660 - Technische Chemie
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ISBN
ISSN
1680-7324
1680-7316
1680-7316
Language
English
Created during FHNW affiliation
No
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Gold
License
Citation
FISSEHA, Rebeka, Josef DOMMEN, Lukas GUTZWILLER, Ernest WEINGARTNER, Martin GYSEL, C. EMMENEGGER, Markus KALBERER und Urs BALTENSPERGER, 2006. Seasonal and diurnal characteristics of water soluble inorganic compounds in the gas and aerosol phase in the Zurich area. Atmospheric Chemistry and Physics. 2006. Bd. 6, Nr. 7, S. 1895–1904. DOI 10.5194/acp-6-1895-2006. Verfügbar unter: https://doi.org/10.26041/fhnw-9794