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Quantitative determination of the biomass-burning contribution to atmospheric carbonaceous aerosols in Daejeon, Korea, during the rice-harvest period
Abstract To investigate the impact of biomass-burning emissions on atmospheric carbonaceous aerosols, the biomass burning tracers; levoglucosan, mannonsan, galactosan, and K+ were measured at a suburban site in Daejeon, Korea, during the rice-harvest period, during the fall, 2012. The emissions of K+ from biomass burning (K+ _BB) were estimated by subtracting sea-salt K+ and soil K+ concentrations from measured K+ concentrations. Regression analysis of levoglucosan and K+ _BB reveals that K+ _BB alone is not suitable as a biomass-burning tracer in the Daejeon atmosphere, especially when the biomass-burning contribution is low. Levoglucosan to K+ _BB ratios during the study period ranged from 0.40 to 1.39, with an average of 0.89 ± 0.30, whereas levoglucosan to mannosan ratios ranged from 4.61 to 15.45, with an average of 6.70 ± 2.69. The ratios of levoglucosan to mannosan, K+, organic carbon (OC), and elemental carbon (EC) show that biomass-burning aerosols in the Daejeon atmosphere during the rice-harvest period are emitted mainly from crop residue, grass, and leaf burnings. The contributions of biomass-burning emissions to OC and EC concentrations were 45% ± 12% and 12% ± 7.3%, respectively, indicating that a large fraction of OC was emitted from biomass burning.
Graphical abstract Display Omitted
Highlights K+ alone is not suitable as a biomass burning trace in Daejeon during fall. BB aerosols were mainly emitted from burnings of crop residue, grass, and leaves. 45 ± 12% of OC was emitted from BB burning. 12 ± 7.3% of EC was emitted from BB burning.
Quantitative determination of the biomass-burning contribution to atmospheric carbonaceous aerosols in Daejeon, Korea, during the rice-harvest period
Abstract To investigate the impact of biomass-burning emissions on atmospheric carbonaceous aerosols, the biomass burning tracers; levoglucosan, mannonsan, galactosan, and K+ were measured at a suburban site in Daejeon, Korea, during the rice-harvest period, during the fall, 2012. The emissions of K+ from biomass burning (K+ _BB) were estimated by subtracting sea-salt K+ and soil K+ concentrations from measured K+ concentrations. Regression analysis of levoglucosan and K+ _BB reveals that K+ _BB alone is not suitable as a biomass-burning tracer in the Daejeon atmosphere, especially when the biomass-burning contribution is low. Levoglucosan to K+ _BB ratios during the study period ranged from 0.40 to 1.39, with an average of 0.89 ± 0.30, whereas levoglucosan to mannosan ratios ranged from 4.61 to 15.45, with an average of 6.70 ± 2.69. The ratios of levoglucosan to mannosan, K+, organic carbon (OC), and elemental carbon (EC) show that biomass-burning aerosols in the Daejeon atmosphere during the rice-harvest period are emitted mainly from crop residue, grass, and leaf burnings. The contributions of biomass-burning emissions to OC and EC concentrations were 45% ± 12% and 12% ± 7.3%, respectively, indicating that a large fraction of OC was emitted from biomass burning.
Graphical abstract Display Omitted
Highlights K+ alone is not suitable as a biomass burning trace in Daejeon during fall. BB aerosols were mainly emitted from burnings of crop residue, grass, and leaves. 45 ± 12% of OC was emitted from BB burning. 12 ± 7.3% of EC was emitted from BB burning.
Quantitative determination of the biomass-burning contribution to atmospheric carbonaceous aerosols in Daejeon, Korea, during the rice-harvest period
Jung, Jinsang (author) / Lee, Sangil (author) / Kim, Hyosun (author) / Kim, Doyeon (author) / Lee, Hyoeun (author) / Oh, Sanghyup (author)
Atmospheric Environment ; 89 ; 642-650
2014-03-04
9 pages
Article (Journal)
Electronic Resource
English
Chemical Composition of Post-Harvest Biomass Burning Aerosols in Gwangju, Korea
| British Library Conference Proceedings | 2004
Chemical Composition of Post-Harvest Biomass Burning Aerosols in Gwangju, Korea
| Taylor & Francis Verlag | 2004