دورية أكاديمية
Brown Carbon in Primary and Aged Coal Combustion Emission
| العنوان: | Brown Carbon in Primary and Aged Coal Combustion Emission |
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| المؤلفون: | Ni, Haiyan, Huang, Ru Jin, Pieber, Simone M., Corbin, Joel C., Stefenelli, Giulia, Pospisilova, Veronika, Klein, Felix, Gysel-Beer, Martin, Yang, Lu, Baltensperger, Urs, Haddad, Imad El, Slowik, Jay G., Cao, Junji, Prévôt, André S.H., Dusek, Ulrike |
| المصدر: | Ni , H , Huang , R J , Pieber , S M , Corbin , J C , Stefenelli , G , Pospisilova , V , Klein , F , Gysel-Beer , M , Yang , L , Baltensperger , U , Haddad , I E , Slowik , J G , Cao , J , Prévôt , A S H & Dusek , U 2021 , ' Brown Carbon in Primary and Aged Coal Combustion Emission ' , Environmental Science and Technology , vol. 55 , no. 9 , pp. 5701-5710 . https://doi.org/10.1021/acs.est.0c08084Test |
| سنة النشر: | 2021 |
| المجموعة: | University of Groningen research database |
| مصطلحات موضوعية: | light absorption efficiency, optical property, secondary organic aerosol, smog chamber, UV-vis spectrophotometric analysis |
| الوصف: | Smog chamber experiments were conducted to characterize the light absorption of brown carbon (BrC) from primary and photochemically aged coal combustion emissions. Light absorption was measured by the UV-visible spectrophotometric analysis of water and methanol extracts of filter samples. The single-scattering albedo at 450 nm was 0.73 ± 0.10 for primary emissions and 0.75 ± 0.13 for aged emissions. The light absorption coefficient at 365 nm of methanol extracts was higher than that of water extracts by a factor of 10 for primary emissions and a factor of 7 for aged emissions. This suggests that the majority of BrC is water-insoluble even after aging. The mass absorption efficiency of this BrC (MAE365) for primary OA (POA) was dependent on combustion conditions, with an average of 0.84 ± 0.54 m2 g-1, which was significantly higher than that for aged OA (0.24 ± 0.18 m2 g-1). Secondary OA (SOA) dominated aged OA and the decreased MAE365 after aging indicates that SOA is less light absorbing than POA and/or that BrC is bleached (oxidized) with aging. The estimated MAE365 of SOA (0.14 ± 0.08 m2 g-1) was much lower than that of POA. A comparison of MAE365 of residential coal combustion with other anthropogenic sources suggests that residential coal combustion emissions are among the strongest absorbing BrC organics. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://research.rug.nl/en/publications/d97d3160-c24a-4dd9-9463-bb16a74d728bTest |
| DOI: | 10.1021/acs.est.0c08084 |
| الإتاحة: | https://doi.org/10.1021/acs.est.0c08084Test https://hdl.handle.net/11370/d97d3160-c24a-4dd9-9463-bb16a74d728bTest https://research.rug.nl/en/publications/d97d3160-c24a-4dd9-9463-bb16a74d728bTest https://pure.rug.nl/ws/files/220470910/acs.est.0c08084.pdfTest http://www.scopus.com/inward/record.url?scp=85105051241&partnerID=8YFLogxKTest |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.3824D5D1 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.est.0c08084 |
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