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Title: Chemical Bonding and Structural Information of Black CarbonReference Materials and Individual Carbonaceous AtmosphericAerosols

Abstract

The carbon-to-oxygen ratios and graphitic nature of a rangeof black carbon standard reference materials (BC SRMs), high molecularmass humic-like substances (HULIS) and atmospheric particles are examinedusing scanning transmission X-ray microscopy (STXM) coupled with nearedge X-ray absorption fine structure (NEXAFS) spectroscopy. UsingSTXM/NEXAFS, individual particles with diameter>100 nm are studied,thus the diversity of atmospheric particles collected during a variety offield missions is assessed. Applying a semi-quantitative peak fittingmethod to the NEXAFS spectra enables a comparison of BC SRMs and HULIS toparticles originating from anthropogenic combustion and biomass burns,thus allowing determination of the suitability of these materials forrepresenting atmospheric particles. Anthropogenic combustion and biomassburn particles can be distinguished from one another using both chemicalbonding and structural ordering information. While anthropogeniccombustion particles are characterized by a high proportion ofaromatic-C, the presence of benzoquinone and are highly structurallyordered, biomass burn particles exhibit lower structural ordering, asmaller proportion of aromatic-C and contain a much higher proportion ofoxygenated functional groups.

Authors:
; ; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE Director. Office of Science. Biological andEnvironmental Research
OSTI Identifier:
925587
Report Number(s):
LBNL-62087
Journal ID: ISSN 0021-8502; JALSB7; R&D Project: 405502; BnR: KP1205030; TRN: US200810%%46
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Aerosol Science; Journal Volume: 38; Journal Issue: 6; Related Information: Journal Publication Date: 06/2007
Country of Publication:
United States
Language:
English
Subject:
54; 37; ABSORPTION; AEROSOLS; BENZOQUINONES; BIOMASS; BONDING; CALIBRATION STANDARDS; CARBON; COMBUSTION; FINE STRUCTURE; FUNCTIONALS; MICROSCOPY; SPECTRA; SPECTROSCOPY; Black Carbon soot

Citation Formats

Hopkins, Rebecca J., Tivanski, Alexei V., Marten, Bryan D., and Gilles, Mary K. Chemical Bonding and Structural Information of Black CarbonReference Materials and Individual Carbonaceous AtmosphericAerosols. United States: N. p., 2007. Web. doi:10.1016/j.jaerosci.2007.03.009.
Hopkins, Rebecca J., Tivanski, Alexei V., Marten, Bryan D., & Gilles, Mary K. Chemical Bonding and Structural Information of Black CarbonReference Materials and Individual Carbonaceous AtmosphericAerosols. United States. doi:10.1016/j.jaerosci.2007.03.009.
Hopkins, Rebecca J., Tivanski, Alexei V., Marten, Bryan D., and Gilles, Mary K. Wed . "Chemical Bonding and Structural Information of Black CarbonReference Materials and Individual Carbonaceous AtmosphericAerosols". United States. doi:10.1016/j.jaerosci.2007.03.009. https://www.osti.gov/servlets/purl/925587.
@article{osti_925587,
title = {Chemical Bonding and Structural Information of Black CarbonReference Materials and Individual Carbonaceous AtmosphericAerosols},
author = {Hopkins, Rebecca J. and Tivanski, Alexei V. and Marten, Bryan D. and Gilles, Mary K.},
abstractNote = {The carbon-to-oxygen ratios and graphitic nature of a rangeof black carbon standard reference materials (BC SRMs), high molecularmass humic-like substances (HULIS) and atmospheric particles are examinedusing scanning transmission X-ray microscopy (STXM) coupled with nearedge X-ray absorption fine structure (NEXAFS) spectroscopy. UsingSTXM/NEXAFS, individual particles with diameter>100 nm are studied,thus the diversity of atmospheric particles collected during a variety offield missions is assessed. Applying a semi-quantitative peak fittingmethod to the NEXAFS spectra enables a comparison of BC SRMs and HULIS toparticles originating from anthropogenic combustion and biomass burns,thus allowing determination of the suitability of these materials forrepresenting atmospheric particles. Anthropogenic combustion and biomassburn particles can be distinguished from one another using both chemicalbonding and structural ordering information. While anthropogeniccombustion particles are characterized by a high proportion ofaromatic-C, the presence of benzoquinone and are highly structurallyordered, biomass burn particles exhibit lower structural ordering, asmaller proportion of aromatic-C and contain a much higher proportion ofoxygenated functional groups.},
doi = {10.1016/j.jaerosci.2007.03.009},
journal = {Journal of Aerosol Science},
number = 6,
volume = 38,
place = {United States},
year = {Wed Apr 25 00:00:00 EDT 2007},
month = {Wed Apr 25 00:00:00 EDT 2007}
}
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