IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Separation of brown carbon from black carbon forIMPROVE and CSN PM2.5 Samples
Chow.JC(Chow.Judith C)1,2; Watson.JG(Watson.John G)1,2; Green ,MC(Green, Mark C)1; Wang,XL(Wang,Xiaoliang)1; Chen,LA(Chen,L.-W.Antony)3; Trimble,DL(Trimble, Dana L)1; Cropper, PM(Cropper, Paul M)1; Kohl,SD(Kohl.Steven D)1; Gronstal. SB(Gronstal, Steven B)1
Source PublicationJournal of the Air & Waste Management Association
AbstractThe replacement of the Desert Research Institute (DRI) model 2001 with model 2015 thermal/optical analyzers (TOAs) results in continuity of the long-term organic carbon (OC) and elemental carbon (EC) database, and it adds optical information with no additional carbon analysis effort. The value of multiwavelength light attenuation is that light absorption due to black carbon (BC) can be separated from that of brown carbon (BrC), with subsequent attribution to known sources such as biomass burning and secondary organic aerosols. There is evidence of filter loading effects for the 25% of all samples with the highest EC concentrations based on the ratio of light attenuation to EC. Loading corrections similar to those used for the seven-wavelength aethalometer need to be investigated. On average, nonurban Interagency Monitoring of PROtected Visual Environments (IMPROVE) samples show higher BrC fractions of short-wavelength absorption than urban Chemical Speciation Network (CSN) samples, owing to greater influence from biomass burning and aged aerosols, as well as to higher primary BC contributions from engine exhaust at urban sites. Sequential samples taken during an Everglades National Park wildfire demonstrate the evolution from flaming to smoldering combustion, with the BrC fraction increasing as smoldering begins to dominate the fire event.
Indexed BySCI
Project Number1214163 ; 1464501 ; P16PC0029 ; 4947-rfpa14-1/15-1
Funding OrganizationNational Science Foundation Grant ; National Park Service IMPROVE Carbon Analysis Contract ; Health Effects Institte
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Document Type期刊论文
Affiliation1.Division of Atmospheric Sciences , Desert Research Institute , Reno , NV , USA
2.State Key Laboratory of Loess and Quaternary Geology (SKLLQG) , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an, Shaanxi Province, People's Republic of China
3.Department of Environmental and Occupational Health , University of Nevada , Las Vegas , NV , USA.
Recommended Citation
GB/T 7714
Chow.JC,Watson.JG,Green ,MC,et al. Separation of brown carbon from black carbon forIMPROVE and CSN PM2.5 Samples[J]. Journal of the Air & Waste Management Association,2018,68(5):494-510.
APA Chow.JC.,Watson.JG.,Green ,MC.,Wang,XL.,Chen,LA.,...&Gronstal. SB.(2018).Separation of brown carbon from black carbon forIMPROVE and CSN PM2.5 Samples.Journal of the Air & Waste Management Association,68(5),494-510.
MLA Chow.JC,et al."Separation of brown carbon from black carbon forIMPROVE and CSN PM2.5 Samples".Journal of the Air & Waste Management Association 68.5(2018):494-510.
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