Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicity
<p>Although air quality guidelines generally use the atmospheric concentration of fine particulate matter (PM<span class="inline-formula"><sub>2.5</sub></span>) as a metric for air pollution evaluation and management, the fact cannot be ignored that different...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2024-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/24/1345/2024/acp-24-1345-2024.pdf |
| _version_ | 1797338668547964928 |
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| author | X.-S. Luo W. Huang G. Shen Y. Pang M. Tang W. Li Z. Zhao H. Li Y. Wei L. Xie T. Mehmood |
| author_facet | X.-S. Luo W. Huang G. Shen Y. Pang M. Tang W. Li Z. Zhao H. Li Y. Wei L. Xie T. Mehmood |
| author_sort | X.-S. Luo |
| collection | DOAJ |
| description | <p>Although air quality guidelines generally use the atmospheric concentration of fine particulate matter (PM<span class="inline-formula"><sub>2.5</sub></span>) as a metric for air pollution evaluation and management, the fact cannot be ignored that different particle toxicities are unequal and significantly related to their sources and chemical compositions. Therefore, judging the most harmful source and identifying the toxic component would be helpful for optimizing air quality standards and prioritizing targeted PM<span class="inline-formula"><sub>2.5</sub></span> control strategies to protect public health more effectively. Since the combustions of fuels, including oil, coal, and biomass, are the main anthropogenic sources of environmental PM<span class="inline-formula"><sub>2.5</sub></span>, their discrepant contributions to health risks of mixed ambient aerosol pollution dominated by the respective emission intensity and unequal toxicity of chemical components need to be identified. In order to quantify the differences between these combustion primary emissions, 10 types of PM<span class="inline-formula"><sub>2.5</sub></span> from each typical source group, i.e., vehicle exhaust, coal combustion, and plant biomass (domestic biofuel) burning, were collected for comparative study with toxicological mechanisms. In total, 30 types of individual combustion samples were intercompared with representative urban ambient air PM<span class="inline-formula"><sub>2.5</sub></span> samples, whose chemical characteristics and biological effects were investigated by component analysis (carbon, metals, soluble ions) and in vitro toxicity assays (cell viability, oxidative stress, inflammatory response) of human lung adenocarcinoma epithelial cells (A549). Carbonaceous fractions were plenteous in automobile exhaust and biomass burning, while heavy metals were more plentiful in PM<span class="inline-formula"><sub>2.5</sub></span> from coal combustion and automobile exhaust. The overall ranking of mass-normalized cytotoxicity for source-specific PM<span class="inline-formula"><sub>2.5</sub></span> was automobile exhaust <span class="inline-formula"><i>></i></span> coal combustion <span class="inline-formula"><i>></i></span> domestic plant biomass burning <span class="inline-formula"><i>></i></span> ambient urban air, possibly with differential toxicity triggers, and showed that the carbonaceous fractions (organic carbon, OC; elemental carbon, EC) and redox-active transition metals (V, Ni, Cr) assisted by water-soluble ions (Ca<span class="inline-formula"><sup>2+</sup></span>, Mg<span class="inline-formula"><sup>2+</sup></span>, F<span class="inline-formula"><sup>−</sup></span>, Cl<span class="inline-formula"><sup>−</sup></span>) might play important roles in inducing cellular reactive organic species (ROS) production, causing oxidative stress and inflammation, resulting in cell injury and apoptosis, and thus damaging human health. Coupled with the source apportionment results of typical urban ambient air PM<span class="inline-formula"><sub>2.5</sub></span> in eastern China, reducing toxic PM<span class="inline-formula"><sub>2.5</sub></span> from these anthropogenic combustions will be greatly beneficial to public health. In addition to the air pollution control measures that have been implemented, like strengthening the vehicle emission standards,<span id="page1346"/> switching energy from coal to gas and electricity, and controlling the open incineration of agricultural straws, further methods could be considered, especially by preferentially reducing the diesel exhaust, lessening the coal combustion by replacement with low-ash clean coals, and depressing the rural crop straw biomass burning emissions.</p> |
| first_indexed | 2024-03-08T09:34:37Z |
| format | Article |
| id | doaj.art-2dc885b50bec48e9ba434df6dde71899 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-03-08T09:34:37Z |
| publishDate | 2024-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-2dc885b50bec48e9ba434df6dde718992024-01-30T11:04:29ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242024-01-01241345136010.5194/acp-24-1345-2024Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicityX.-S. Luo0W. Huang1G. Shen2Y. Pang3M. Tang4W. Li5Z. Zhao6H. Li7Y. Wei8L. Xie9T. Mehmood10International Center for Ecology, Meteorology, and Environment, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaInternational Center for Ecology, Meteorology, and Environment, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaLaboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaInternational Center for Ecology, Meteorology, and Environment, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaInternational Center for Ecology, Meteorology, and Environment, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaDepartment of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou 310027, ChinaInternational Center for Ecology, Meteorology, and Environment, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaInternational Center for Ecology, Meteorology, and Environment, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaInternational Center for Ecology, Meteorology, and Environment, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaHealth Science Center, Peking University, Beijing 100871, ChinaCollege of Ecology and Environment, Hainan University, Haikou 570228, China<p>Although air quality guidelines generally use the atmospheric concentration of fine particulate matter (PM<span class="inline-formula"><sub>2.5</sub></span>) as a metric for air pollution evaluation and management, the fact cannot be ignored that different particle toxicities are unequal and significantly related to their sources and chemical compositions. Therefore, judging the most harmful source and identifying the toxic component would be helpful for optimizing air quality standards and prioritizing targeted PM<span class="inline-formula"><sub>2.5</sub></span> control strategies to protect public health more effectively. Since the combustions of fuels, including oil, coal, and biomass, are the main anthropogenic sources of environmental PM<span class="inline-formula"><sub>2.5</sub></span>, their discrepant contributions to health risks of mixed ambient aerosol pollution dominated by the respective emission intensity and unequal toxicity of chemical components need to be identified. In order to quantify the differences between these combustion primary emissions, 10 types of PM<span class="inline-formula"><sub>2.5</sub></span> from each typical source group, i.e., vehicle exhaust, coal combustion, and plant biomass (domestic biofuel) burning, were collected for comparative study with toxicological mechanisms. In total, 30 types of individual combustion samples were intercompared with representative urban ambient air PM<span class="inline-formula"><sub>2.5</sub></span> samples, whose chemical characteristics and biological effects were investigated by component analysis (carbon, metals, soluble ions) and in vitro toxicity assays (cell viability, oxidative stress, inflammatory response) of human lung adenocarcinoma epithelial cells (A549). Carbonaceous fractions were plenteous in automobile exhaust and biomass burning, while heavy metals were more plentiful in PM<span class="inline-formula"><sub>2.5</sub></span> from coal combustion and automobile exhaust. The overall ranking of mass-normalized cytotoxicity for source-specific PM<span class="inline-formula"><sub>2.5</sub></span> was automobile exhaust <span class="inline-formula"><i>></i></span> coal combustion <span class="inline-formula"><i>></i></span> domestic plant biomass burning <span class="inline-formula"><i>></i></span> ambient urban air, possibly with differential toxicity triggers, and showed that the carbonaceous fractions (organic carbon, OC; elemental carbon, EC) and redox-active transition metals (V, Ni, Cr) assisted by water-soluble ions (Ca<span class="inline-formula"><sup>2+</sup></span>, Mg<span class="inline-formula"><sup>2+</sup></span>, F<span class="inline-formula"><sup>−</sup></span>, Cl<span class="inline-formula"><sup>−</sup></span>) might play important roles in inducing cellular reactive organic species (ROS) production, causing oxidative stress and inflammation, resulting in cell injury and apoptosis, and thus damaging human health. Coupled with the source apportionment results of typical urban ambient air PM<span class="inline-formula"><sub>2.5</sub></span> in eastern China, reducing toxic PM<span class="inline-formula"><sub>2.5</sub></span> from these anthropogenic combustions will be greatly beneficial to public health. In addition to the air pollution control measures that have been implemented, like strengthening the vehicle emission standards,<span id="page1346"/> switching energy from coal to gas and electricity, and controlling the open incineration of agricultural straws, further methods could be considered, especially by preferentially reducing the diesel exhaust, lessening the coal combustion by replacement with low-ash clean coals, and depressing the rural crop straw biomass burning emissions.</p>https://acp.copernicus.org/articles/24/1345/2024/acp-24-1345-2024.pdf |
| spellingShingle | X.-S. Luo W. Huang G. Shen Y. Pang M. Tang W. Li Z. Zhao H. Li Y. Wei L. Xie T. Mehmood Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicity Atmospheric Chemistry and Physics |
| title | Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicity |
| title_full | Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicity |
| title_fullStr | Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicity |
| title_full_unstemmed | Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicity |
| title_short | Source differences in the components and cytotoxicity of PM<sub>2.5</sub> from automobile exhaust, coal combustion, and biomass burning contributing to urban aerosol toxicity |
| title_sort | source differences in the components and cytotoxicity of pm sub 2 5 sub from automobile exhaust coal combustion and biomass burning contributing to urban aerosol toxicity |
| url | https://acp.copernicus.org/articles/24/1345/2024/acp-24-1345-2024.pdf |
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