scholarly journals 13C- and14C-based study of sources and atmospheric processing of water-soluble organic carbon (WSOC) in South Asian aerosols

2013 ◽  
Vol 118 (2) ◽  
pp. 614-626 ◽  
Author(s):  
Elena N. Kirillova ◽  
August Andersson ◽  
Rebecca J. Sheesley ◽  
Martin Kruså ◽  
P. S. Praveen ◽  
...  
Keyword(s):  
Organic Carbon ◽  
South Asian ◽  
Water Soluble ◽  
Atmospheric Processing ◽  
Water Soluble Organic Carbon ◽  
Soluble Organic Carbon

scholarly journals Water-soluble organic carbon aerosols during a full New Delhi winter: Isotope-based source apportionment and optical properties

2014 ◽  
Vol 119 (6) ◽  
pp. 3476-3485 ◽  
Author(s):  
Elena N. Kirillova ◽  
August Andersson ◽  
Suresh Tiwari ◽  
Atul Kumar Srivastava ◽  
Deewan Singh Bisht ◽  
...  
Keyword(s):  
Optical Properties ◽  
Organic Carbon ◽  
Source Apportionment ◽  
Water Soluble ◽  
New Delhi ◽  
Water Soluble Organic Carbon ◽  
Soluble Organic Carbon ◽  
Carbon Aerosols

Seasonal characteristics of water-soluble organic carbon in atmospheric particles in the inland Kanto plain, Japan

2009 ◽  
Vol 43 (21) ◽  
pp. 3345-3351 ◽  
Author(s):  
Kimiyo Kumagai ◽  
Akihiro Iijima ◽  
Hiroshi Tago ◽  
Atsushi Tomioka ◽  
Kunihisa Kozawa ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Atmospheric Particles ◽  
Water Soluble ◽  
Seasonal Characteristics ◽  
Water Soluble Organic Carbon ◽  
Soluble Organic Carbon

scholarly journals Molecular Composition and Photochemical Evolution of Water Soluble Organic Carbon (WSOC) Extracted from Field Biomass Burning Aerosols using High Resolution Mass Spectrometry

2019 ◽  
Author(s):  
Jing Cai ◽  
Xiangying Zeng ◽  
Guorui Zhi ◽  
Sasho Gligorovski ◽  
Guoying Sheng ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Organic Carbon ◽  
Biomass Burning ◽  
High Resolution Mass Spectrometry ◽  
Water Soluble ◽  
Oxygenated Compounds ◽  
Water Soluble Organic Carbon ◽  
Soluble Organic Carbon ◽  
Resolution Mass

Abstract. Photochemistry plays an important role in the evolution of atmospheric water soluble organic carbon (WSOC), which dissolves into clouds, fogs and aerosol liquid water. In this study, we examined the molecular composition and evolution of a WSOC mixture extracted from fresh biomass burning aerosols upon photolysis, using direct infusion electrospray ionization high-resolution mass spectrometry (ESI-HRMS) and liquid chromatography coupled with mass spectrometry (LC/ESI-HRMS). For comparison, two typical phenolic compounds (i.e., phenol and guaiacol) emitted from lignin pyrolysis in combination with hydrogen peroxide (H2O2) as a typical OH radical precursor, were exposed to simulated sunlight irradiation. The photochemistry of both, the phenols (photo-oxidation) and WSOC mixture (direct photolysis) can produce a series of highly oxygenated compounds which in turn increases the degree of oxidation of organic composition and acidity of the bulk solution. In particular, the LC/ESI-HRMS technique revealed significant photochemical evolution on the WSOC composition, e.g., the photodegradation of low oxygenated species and the formation of highly oxygenated products. We also tentatively compared the mass spectra of photolytic time-profile extract with each other for a more comprehensive description of the photolytic evolution. The calculated average oxygen-to-carbon (O / C) ratios of oxygenated compounds in bulk extract increases from 0.38 ± 0.02 to 0.44 ± 0.02 (mean±standard deviation) while the intensity (S / N)-weighted average O / C (O / Cw) increases from 0.45 ± 0.03 to 0.53 ± 0.06 as the time of irradiation extends from 0 to 12 h. These findings indicate that the water soluble organic fraction of fresh combustion-derived aerosols have the potential to form more oxidized organic matter, accounting for the highly oxygenated nature of atmospheric organic aerosols.

Insights into the Origin of Water Soluble Organic Carbon in Atmospheric Fine Particulate Matter

2009 ◽  
Vol 43 (11) ◽  
pp. 1099-1107 ◽  
Author(s):  
David C. Snyder ◽  
Andrew P. Rutter ◽  
Ryan Collins ◽  
Chris Worley ◽  
James J. Schauer
Keyword(s):  
Particulate Matter ◽  
Organic Carbon ◽  
Fine Particulate Matter ◽  
Water Soluble ◽  
Fine Particulate ◽  
Water Soluble Organic Carbon ◽  
Soluble Organic Carbon
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