Radiocarbon (14C)-deduced biogenic and anthropogenic contributions to organic carbon (OC) of urban aerosols from Zürich, Switzerland. Szidat, S., Jenk, T., Gäggeler, H., Synal, H., Fisseha, R., Baltensperger, U., Kalberer, M., Samburova, V., Reimann, S., Kasper-Giebl, A., & Hajdas, I. Atmospheric Environment, 38(24):4035-4044, 8, 2004. ![Radiocarbon (14C)-deduced biogenic and anthropogenic contributions to organic carbon (OC) of urban aerosols from Zürich, Switzerland [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website abstract bibtex Measurements of the fraction of contemporary carbon (fC) in organic carbon (OC) of ambient aerosols are presented using radiocarbon (14C). This value directly represents the biogenic contribution to OC, as the biosphere releases organic compounds with the present 14C/12C level (fC=1), whereas 14C has become extinct in anthropogenic emissions of fossil carbon (fC=0). This simple model assumes biomass burning to be negligible. Daytime and nighttime samples were collected at an urban location in Zürich (Switzerland) in August 2002. Measured fC values ranged from 0.51 to 0.80, which indicates a major biogenic influence. This demonstrates that carbonaceous aerosol at this site is more dominated by the rural vicinity of Zürich rather than direct urban sources. Furthermore, this investigation enabled an insight into the processes of particle formation, accumulation, and deposition for biogenic and anthropogenic emission sources. On the one hand, biogenic OC depends on the activity of plants to emit reactive volatile species like monoterpenes and on atmospheric oxidants that promote secondary organic aerosol formation. On the other hand, anthropogenic OC correlates with black carbon or elemental carbon.
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title = {Radiocarbon (14C)-deduced biogenic and anthropogenic contributions to organic carbon (OC) of urban aerosols from Zürich, Switzerland},
type = {article},
year = {2004},
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abstract = {Measurements of the fraction of contemporary carbon (fC) in organic carbon (OC) of ambient aerosols are presented using radiocarbon (14C). This value directly represents the biogenic contribution to OC, as the biosphere releases organic compounds with the present 14C/12C level (fC=1), whereas 14C has become extinct in anthropogenic emissions of fossil carbon (fC=0). This simple model assumes biomass burning to be negligible. Daytime and nighttime samples were collected at an urban location in Zürich (Switzerland) in August 2002. Measured fC values ranged from 0.51 to 0.80, which indicates a major biogenic influence. This demonstrates that carbonaceous aerosol at this site is more dominated by the rural vicinity of Zürich rather than direct urban sources. Furthermore, this investigation enabled an insight into the processes of particle formation, accumulation, and deposition for biogenic and anthropogenic emission sources. On the one hand, biogenic OC depends on the activity of plants to emit reactive volatile species like monoterpenes and on atmospheric oxidants that promote secondary organic aerosol formation. On the other hand, anthropogenic OC correlates with black carbon or elemental carbon.},
bibtype = {article},
author = {Szidat, S and Jenk, T.M and Gäggeler, H.W and Synal, H.-A and Fisseha, R and Baltensperger, U and Kalberer, M and Samburova, V and Reimann, S and Kasper-Giebl, A and Hajdas, I},
journal = {Atmospheric Environment},
number = {24}
}
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