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Evaluation of δ13C in Carbonaceous Aerosol Source Apportionment at a Rural Measurement Site

Martinsson, Johan LU ; Andersson, August; Sporre, Moa LU ; Friberg, Johan LU ; Kristensson, Adam LU ; Swietlicki, Erik LU ; Olsson, Pål Axel LU and Stenström, Kristina LU (2017) In Aerosol and Air Quality Research 17(8). p.2081-2094
Abstract
The stable isotope of carbon, 13C, has been used in several studies for source characterization of carbonaceous aerosol since there are specific signatures for different sources. In rural areas, the influence of different sources is complex and the application of δ13C for source characterization of the total carbonaceous aerosol (TC) can therefore be difficult, especially the separation between biomass burning and biogenic sources. We measured δ13C from 25 filter samples collected during one year at a rural background site in southern Sweden. Throughout the year, the measured δ13C showed low variability (–26.73 to –25.64‰). We found that the measured δ13C did not correlate with other... (More)
The stable isotope of carbon, 13C, has been used in several studies for source characterization of carbonaceous aerosol since there are specific signatures for different sources. In rural areas, the influence of different sources is complex and the application of δ13C for source characterization of the total carbonaceous aerosol (TC) can therefore be difficult, especially the separation between biomass burning and biogenic sources. We measured δ13C from 25 filter samples collected during one year at a rural background site in southern Sweden. Throughout the year, the measured δ13C showed low variability (–26.73 to –25.64‰). We found that the measured δ13C did not correlate with other commonly used source apportionment tracers (14C, levoglucosan). δ13C values showed lower variability during the cold months compared to the summer, and this narrowing of the δ13C values together with elevated levoglucosan concentrations may indicate contribution from sources with lower δ13C variation, such as biomass or fossil fuel combustion. Comparison of two Monte Carlo based source apportionment models showed no significant difference in results when δ13C was incorporated in the model. The insignificant change of redistributed fraction of carbon between the sources was mainly a consequence of relatively narrow range of δ13C values and was complicated by an unaccounted kinetic isotopic effect and overlapping δ13C end-member values for biomass burning and biogenic sources. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Aerosol and Air Quality Research
volume
17
issue
8
pages
2081 - 2094
publisher
Taiwan Association for Aerosol Research
external identifiers
  • scopus:85027707527
  • wos:000408055500013
ISSN
2071-1409
DOI
10.4209/aaqr.2016.09.0392
language
English
LU publication?
yes
id
fce04d77-1fbe-4ba2-9125-fcd9f58fbc09
date added to LUP
2017-08-14 12:34:06
date last changed
2018-01-16 13:22:47
@article{fce04d77-1fbe-4ba2-9125-fcd9f58fbc09,
  abstract     = {The stable isotope of carbon, <sup>13</sup>C, has been used in several studies for source characterization of carbonaceous aerosol since there are specific signatures for different sources. In rural areas, the influence of different sources is complex and the application of δ<sup>13</sup>C for source characterization of the total carbonaceous aerosol (TC) can therefore be difficult, especially the separation between biomass burning and biogenic sources. We measured δ<sup>13</sup>C from 25 filter samples collected during one year at a rural background site in southern Sweden. Throughout the year, the measured δ<sup>13</sup>C showed low variability (–26.73 to –25.64‰). We found that the measured δ<sup>13</sup>C did not correlate with other commonly used source apportionment tracers (<sup>14</sup>C, levoglucosan). δ<sup>13</sup>C values showed lower variability during the cold months compared to the summer, and this narrowing of the δ<sup>13</sup>C values together with elevated levoglucosan concentrations may indicate contribution from sources with lower δ<sup>13</sup>C variation, such as biomass or fossil fuel combustion. Comparison of two Monte Carlo based source apportionment models showed no significant difference in results when δ<sup>13</sup>C was incorporated in the model. The insignificant change of redistributed fraction of carbon between the sources was mainly a consequence of relatively narrow range of δ<sup>13</sup>C values and was complicated by an unaccounted kinetic isotopic effect and overlapping δ<sup>13</sup>C end-member values for biomass burning and biogenic sources.},
  author       = {Martinsson, Johan and Andersson, August and Sporre, Moa and Friberg, Johan and Kristensson, Adam and Swietlicki, Erik and Olsson, Pål Axel and Stenström, Kristina},
  issn         = {2071-1409},
  language     = {eng},
  number       = {8},
  pages        = {2081--2094},
  publisher    = {Taiwan Association for Aerosol Research},
  series       = {Aerosol and Air Quality Research},
  title        = {Evaluation of δ<sup>13</sup>C in Carbonaceous Aerosol Source Apportionment at a Rural Measurement Site},
  url          = {http://dx.doi.org/10.4209/aaqr.2016.09.0392},
  volume       = {17},
  year         = {2017},
}