Sökning: WFRF:(Arrhenius Sara) >
n-Alkanoic monocarb...
n-Alkanoic monocarboxylic acid concentrations in urban and rural aerosols : Seasonal dependence and major sources
-
- Shannigrahi, Ardhendu Sekhar, 1965 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Göteborgs Universitet,University of Gothenburg, Sweden
-
- Pettersson, Jan B. C., 1962 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Göteborgs Universitet,University of Gothenburg, Sweden
-
- Langer, Sarka, 1960 (författare)
- RISE,Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Göteborgs Universitet,SP – Sveriges Tekniska Forskningsinstitut,University of Gothenburg, Sweden; IVL Swedish Environmental Research Institute, Sweden
-
visa fler...
-
- Arrhenius, Karine (författare)
- RISE,SP – Sveriges Tekniska Forskningsinstitut / Organisk kemi (Kmo)
-
- Hagström, Magnus, 1965 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Göteborgs Universitet,University of Gothenburg, Sweden
-
- Janhäll, Sara (författare)
- Gothenburg University,Statens väg- och transportforskningsinstitut,Miljö, MILJÖ,Göteborgs Universitet,Göteborgs universitet,University of Gothenburg,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg, Sweden; Swedish National Road and Transport Research Institute, Sweden
-
- Hallquist, Mattias, 1969 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Göteborgs Universitet,University of Gothenburg, Sweden
-
- Pathak, Ravi K. (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Göteborgs Universitet,University of Gothenburg, Sweden
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2014
- 2014
- Engelska.
-
Ingår i: Atmospheric research. - : Elsevier BV. - 0169-8095 .- 1873-2895. ; 143, s. 228-237
- Relaterad länk:
-
http://dx.doi.org/10...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://research.cha...
-
https://gup.ub.gu.se...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- We report new data on the abundance and distribution of n-monocarboxylic acids (n-MCAs) in fine- and coarse-mode aerosols in rural and urban areas of Sweden, and determine their possible sources. Overall, C6–C16n-MCAs accounted for ~ 0.5–1.2% of the total PM10 (particulate matter ≤ 10 μm) mass. In general, the C12–C16 fraction was the most abundant (> 75%), with the exception of wintertime samples from a rural site, where C6–C11 acids accounted for 65% of the total C6–C16n-MCA mass. Positive matrix factorization analysis revealed four major sources of n-MCAs: traffic emissions, wood combustion, microbial activity, and a fourth factor that was dominated by semi-volatile n-MCAs.Traffic emissions were important in the urban environment in both seasons and at the rural site during winters, and were a major source of C9–C11 acids. Wood combustion was a significant source at urban sites during the winter and also to some extent at the rural site in both seasons. This is consistent with the use of wood for domestic heating but may also be related to meat cooking. Thus, during the winter, traffic, wood combustion and microbial activity were all important sources in the urban environment, while traffic was the dominant source at the rural site. During the summer, there was considerable day-to-day variation in n-MCA concentrations but microbial activity was the dominant source. The semi-volatile low molecular weight C6–C8 acids accounted for a small (~ 5–10%) fraction of the total mass of n-MCAs. This factor is unlikely to be linked to a single source and its influence instead reflects the partitioning of these compounds between the gas and particle phases. This would explain their greater contribution during the winter.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Nyckelord
- Particulate matter
- Measurement
- Distribution (gen)
- Season
- Emission
- 15 Road: Environment
- 15 Road: Environment
- PMF
- Alkanoic acids
- Rural and urban PM
- Microbial activity
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas