Identification of organic acids in secondary organic aerosol and the corresponding gas phase from chamber experiments
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Author (Corporation)
Publication date
15.10.2004
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01A - Journal article
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Analytical Chemistry
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Volume
76
Issue / Number
22
Pages / Duration
6535-6540
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American Chemical Society
Place of publication / Event location
Washington, D.C.
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Abstract
Organic acids in the gas and aerosol phase from photooxidation of 1,3,5-trimethylbenzene in the presence of 300 ppb propene and 300 ppb NOx in smog chamber experiments were determined using a wet effluent diffusion denuder/aerosol collector coupled to ion chromatography (IC) with conductivity detection. Behind the IC, the samples were collected using a fraction collector, for identification of unresolved/unidentified organic acids with IC-mass spectrometry (MS). In total, 20 organic acids were found with MS of which 10 were identified. The organic acids identified offline by IC-MS were then further quantified based on the online IC data. The identification was additionally confirmed with gas chromatography-mass spectrometry. At the maximum aerosol concentration, organic acids comprised 20-45% of the total aerosol mass. The method has a detection limit of 10-100 ng/m3 for the identified carboxylic acids.
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0003-2700
1520-6882
1520-6882
Language
English
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No
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Published
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peer-reviewed
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Closed
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Citation
Fisseha, R., Dommen, J., Sax, M., Paulsen, D., Kalberer, M., Maurer, R., Höfler, F., Weingartner, E., & Baltensperger, U. (2004). Identification of organic acids in secondary organic aerosol and the corresponding gas phase from chamber experiments. Analytical Chemistry, 76(22), 6535–6540. https://doi.org/10.1021/ac048975f