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Inorganic markers, carbonaceous components and stable carbon isotope from biomass burning aerosols in Northeast China
- Source :
- Science of The Total Environment. 572:1244-1251
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- To better characterize the chemical compositions and sources of fine particulate matter (i.e. PM2.5) in Sanjiang Plain, Northeast China, total carbon (TC), organic carbon (OC), elemental carbon (EC), water-soluble organic carbon (WSOC), and inorganic ions as well as stable carbon isotopic composition (δ13C) were measured in this study. Intensively open biomass burning episodes are identified from late September to early October by satellite fire and aerosol optical depth maps. During the biomass-burning episode, concentrations of PM2.5, OC, EC, and WSOC are increased by a factor of 4-12 compared to those during the non-biomass-burning period. Non-sea-salt potassium is strongly correlated with PM2.5, OC, EC and WSOC, demonstrating an important contribution from biomass-burning emissions. The enrichment in both the non-sea-salt potassium and chlorine is significantly larger than other inorganic species, suggesting that biomass-burning aerosols in Sanjiang Plain are mostly fresh and less aged. In addition, the WSOC-to-OC ratio is lower than that reported in biomass-burning aerosols in tropical regions, further supporting that biomass-burning aerosols in Sanjiang Plain are mostly primary and secondary organic aerosols may be not significant. A lower average δ13C value (-26.2‰) is observed during the biomass-burning period, indicating a dominant contribution from combustion of C3 plants in the studied region.
- Subjects :
- China
Environmental Engineering
010504 meteorology & atmospheric sciences
Potassium
chemistry.chemical_element
010501 environmental sciences
Inorganic ions
complex mixtures
01 natural sciences
Fires
Sanjiang Plain
Environmental Chemistry
Biomass
Waste Management and Disposal
0105 earth and related environmental sciences
Aerosols
Total organic carbon
Air Pollutants
Carbon Isotopes
δ13C
Ecology
Pollution
Carbon
Aerosol
chemistry
Isotopes of carbon
Environmental chemistry
Particulate Matter
Environmental Monitoring
Subjects
Details
- ISSN :
- 00489697
- Volume :
- 572
- Database :
- OpenAIRE
- Journal :
- Science of The Total Environment
- Accession number :
- edsair.doi.dedup.....7851467b9a8f39c69f118f607b93ae45