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Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements
The oxidative potential (OP) of PM(10) daily samples collected at a traffic site in southeastern Spain during summer and winter was assessed by two acellular assays: the ascorbic acid (AA) and dithiothreitol (DTT) methods. Although PM(10) levels were similar during both periods, OP values (expressed...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Netherlands
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10009354/ https://www.ncbi.nlm.nih.gov/pubmed/37303961 http://dx.doi.org/10.1007/s11869-023-01332-1 |
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author | Clemente, Á. Gil-Moltó, J. Yubero, E. Juárez, N. Nicolás, J. F. Crespo, J. Galindo, N. |
author_facet | Clemente, Á. Gil-Moltó, J. Yubero, E. Juárez, N. Nicolás, J. F. Crespo, J. Galindo, N. |
author_sort | Clemente, Á. |
collection | PubMed |
description | The oxidative potential (OP) of PM(10) daily samples collected at a traffic site in southeastern Spain during summer and winter was assessed by two acellular assays: the ascorbic acid (AA) and dithiothreitol (DTT) methods. Although PM(10) levels were similar during both periods, OP values (expressed in nmol min(−1) m(−3)) showed a defined seasonal trend. The AA activity was higher in summer than in winter, whereas the DTT reactivity exhibited an opposite seasonal pattern. Both assays were sensitive to different PM(10) components, as shown by the results of the linear correlation analysis. Moreover, the relationship between OP values and PM(10) chemical species was not the same during summer and winter, indicating that particle toxicity is associated with different sources during the warm and cold seasons. When OP values were expressed on a mass basis (nmol min(−1) µg(−1)), lower correlation coefficients with PM(10) chemical species were generally obtained compared to volume-normalized activities. These outcomes suggest that only some specific components have a significant intrinsic oxidative potential. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11869-023-01332-1. |
format | Online Article Text |
id | pubmed-10009354 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Springer Netherlands |
record_format | MEDLINE/PubMed |
spelling | pubmed-100093542023-03-13 Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements Clemente, Á. Gil-Moltó, J. Yubero, E. Juárez, N. Nicolás, J. F. Crespo, J. Galindo, N. Air Qual Atmos Health Article The oxidative potential (OP) of PM(10) daily samples collected at a traffic site in southeastern Spain during summer and winter was assessed by two acellular assays: the ascorbic acid (AA) and dithiothreitol (DTT) methods. Although PM(10) levels were similar during both periods, OP values (expressed in nmol min(−1) m(−3)) showed a defined seasonal trend. The AA activity was higher in summer than in winter, whereas the DTT reactivity exhibited an opposite seasonal pattern. Both assays were sensitive to different PM(10) components, as shown by the results of the linear correlation analysis. Moreover, the relationship between OP values and PM(10) chemical species was not the same during summer and winter, indicating that particle toxicity is associated with different sources during the warm and cold seasons. When OP values were expressed on a mass basis (nmol min(−1) µg(−1)), lower correlation coefficients with PM(10) chemical species were generally obtained compared to volume-normalized activities. These outcomes suggest that only some specific components have a significant intrinsic oxidative potential. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11869-023-01332-1. Springer Netherlands 2023-03-13 2023 /pmc/articles/PMC10009354/ /pubmed/37303961 http://dx.doi.org/10.1007/s11869-023-01332-1 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Clemente, Á. Gil-Moltó, J. Yubero, E. Juárez, N. Nicolás, J. F. Crespo, J. Galindo, N. Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements |
title | Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements |
title_full | Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements |
title_fullStr | Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements |
title_full_unstemmed | Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements |
title_short | Sensitivity of PM(10) oxidative potential to aerosol chemical composition at a Mediterranean urban site: ascorbic acid versus dithiothreitol measurements |
title_sort | sensitivity of pm(10) oxidative potential to aerosol chemical composition at a mediterranean urban site: ascorbic acid versus dithiothreitol measurements |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10009354/ https://www.ncbi.nlm.nih.gov/pubmed/37303961 http://dx.doi.org/10.1007/s11869-023-01332-1 |
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