Articles | Volume 20, issue 9
https://doi.org/10.5194/acp-20-5197-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-5197-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Characterization and comparison of PM2.5 oxidative potential assessed by two acellular assays
Dong Gao
School of Civil and Environmental Engineering, Georgia Institute of
Technology, Atlanta, GA 30332, USA
current address: Department of Environmental Health Sciences, School
of Public Health, Yale University, New Haven, CT 06510, USA
Krystal J. Godri Pollitt
Department of Environmental Health Sciences, School of Public Health,
Yale University, New Haven, CT 06510, USA
James A. Mulholland
School of Civil and Environmental Engineering, Georgia Institute of
Technology, Atlanta, GA 30332, USA
Armistead G. Russell
School of Civil and Environmental Engineering, Georgia Institute of
Technology, Atlanta, GA 30332, USA
School of Earth and Atmospheric Sciences, Georgia Institute of
Technology, Atlanta, GA 30332, USA
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Latest update: 01 Nov 2024
Short summary
This study provides a direct intercomparison between two assays for quantifying oxidative potential (OP) of ambient particles: the synthetic respiratory-tract-lining fluid (RTLF) assay and the dithiothreitol (DTT) assay. The results suggest that the DTT assay and the ascorbic acid depletion in RTLF are associated with organic species, transition metal ions, and antagonistic interactions between species. The glutathione depletion in RTLF is strongly dependent on water-soluble copper.
This study provides a direct intercomparison between two assays for quantifying oxidative...
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