Characterization of water-soluble organic matter in urban aerosol by 1H-NMR spectroscopy

Chalbot, Marie-Cecile G.; Chitranshi, Priyanka; da Costa, Gonçalo Gamboa; Pollock, Erik; Kavouras, Ilias G.

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Characterization of water-soluble organic matter in urban aerosol by 1H-NMR spectroscopy

Mar 2016
By Chalbot, Marie-Cecile G. ; Chitranshi, Priyanka ; da Costa, Gonçalo Gamboa ; ...
Source: Atmos Environ (1994). 128(March 2016):235-245.

[PDF-1.83 MB]

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Alternative Title:

Atmos Environ (1994)
Personal Author:

Chalbot, Marie-Cecile G. ; Chitranshi, Priyanka ; da Costa, Gonçalo Gamboa ; Pollock, Erik ; Kavouras, Ilias G.

Chalbot, Marie-Cecile G. ; Chitranshi, Priyanka ; da Costa, Gonçalo Gamboa ; Pollock, Erik ; Kavouras, Ilias G. Less -
Description:

The functional and (13)C isotopic compositions of water-soluble organic carbon (WSOC) in atmospheric aerosol were determined by nuclear magnetic resonance ((1)H-NMR) and isotope ratio mass spectrometry (IRMS) in an urban location in the Southern Mississippi Valley. The origin of WSOC was resolved using the functional distribution of organic hydrogen, δ(13)C ratio, and positive matrix factorization (PMF). Three factors were retained based on NMR spectral bins loadings. Two factors (factors 1 and 3) demonstrated strong associations with the aliphatic region in the NMR spectra and levoglucosan resonances. Differences between the two factors included the abundance of the aromatic functional group for factor 1, indicating fresh emissions and, for factor 3, the presence of resonances attributed to secondary ammonium nitrate and low δ(13)C ratio values that are indicative of secondary organic aerosol. Factors 1 and 3 added 0.89 and 1.08 μgC m(-3), respectively, with the highest contribution in the summer and fall. Factor 2 retained resonances consistent with saccharides and was attributed to pollen particles. Its contribution to WSOC varied from 0.22 μgC m(-3) in winter to 1.04 μgC m(-3) in spring.
Subjects:

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Article Biomass Burning NMR Organic Aerosol Secondary Organic Aerosol
Source:

Atmos Environ (1994). 128(March 2016):235-245.
Pubmed ID:

27313488
Pubmed Central ID:

PMC4905722
Document Type:

Journal Article
Funding:

FD999999/Intramural FDA HHS/United States ; T42 OH008436/OH/NIOSH CDC HHS/United States

FD999999/Intramural FDA HHS/United States ; T42 OH008436/OH/NIOSH CDC HHS/United States Less -
Collection(s):

CDC Public Access
Main Document Checksum:

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urn:sha256:97c27c3172ba5b23a202c1fe6255b4372b56efceacad7522cd1a5c66b23037c1
Download URL:

https://stacks.cdc.gov/view/cdc/42122/cdc_42122_DS1.pdf
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