Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environment
<p>Mist cannon trucks have been widely applied in megacities in China to reduce the road dust, since they are considered to be more water saving and efficient than the traditional sprinkling trucks. However, their effect on the formation of water-soluble organic compounds and the pollution con...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-06-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/23/6775/2023/acp-23-6775-2023.pdf |
| _version_ | 1797799557637079040 |
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| author | Y. Xu X.-N. Dong C. He D.-S. Wu H.-W. Xiao H.-Y. Xiao |
| author_facet | Y. Xu X.-N. Dong C. He D.-S. Wu H.-W. Xiao H.-Y. Xiao |
| author_sort | Y. Xu |
| collection | DOAJ |
| description | <p>Mist cannon trucks have been widely applied in megacities in China
to reduce the road dust, since they are considered to be more water saving
and efficient than the traditional sprinkling trucks. However, their effect
on the formation of water-soluble organic compounds and the pollution
control of fine particles (PM<span class="inline-formula"><sub>2.5</sub>)</span> remains unknown. We characterized the
variations of chemical compositions in PM<span class="inline-formula"><sub>2.5</sub></span> collected on the road
sides during the simulated operations of mist cannon truck and traditional
sprinkling truck via Fourier transform ion cyclotron resonance mass
spectrometry and ion chromatography. The mass concentrations of
water-soluble organic carbon in PM<span class="inline-formula"><sub>2.5</sub></span> showed a significant increase
(62 %–70 %) after air spraying. Furthermore, we found that water-soluble
organic compounds, particularly organic nitrates, increased significantly
via the interactions of reactive gas-phase organics, atmospheric oxidants
and aerosol liquid water after air spraying, although the air spraying had a
better effect on suppressing road dust than the ground aspersion. Moreover,
the formation of PM<span class="inline-formula"><sub>2.5</sub></span> on the road segment where the mist cannon truck
passed by was promoted, with an increase of up to 13 % in mass
concentration after 25–35 min, on average. Thus, the application of
mist cannon trucks potentially worsens the road atmospheric environment
through the increase in PM<span class="inline-formula"><sub>2.5</sub></span> levels and the production of a large
number of water-soluble organic compounds in PM<span class="inline-formula"><sub>2.5</sub></span>. The overall results
provide not only valuable insights to the formation processes of
water-soluble organic compounds associated with aerosol liquid water in the
road environment but also management strategies to regulate the operation of
mist cannon trucks in China.</p> |
| first_indexed | 2024-03-13T04:21:41Z |
| format | Article |
| id | doaj.art-592bae4875c74fb982a273299d19c678 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-03-13T04:21:41Z |
| publishDate | 2023-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-592bae4875c74fb982a273299d19c6782023-06-20T09:22:05ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242023-06-01236775678810.5194/acp-23-6775-2023Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environmentY. Xu0X.-N. Dong1C. He2D.-S. Wu3H.-W. Xiao4H.-Y. Xiao5School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaJiangxi Province Science and Technology Information Institute, Nanchang 330000, ChinaState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaSchool of Resource, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, ChinaSchool of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China<p>Mist cannon trucks have been widely applied in megacities in China to reduce the road dust, since they are considered to be more water saving and efficient than the traditional sprinkling trucks. However, their effect on the formation of water-soluble organic compounds and the pollution control of fine particles (PM<span class="inline-formula"><sub>2.5</sub>)</span> remains unknown. We characterized the variations of chemical compositions in PM<span class="inline-formula"><sub>2.5</sub></span> collected on the road sides during the simulated operations of mist cannon truck and traditional sprinkling truck via Fourier transform ion cyclotron resonance mass spectrometry and ion chromatography. The mass concentrations of water-soluble organic carbon in PM<span class="inline-formula"><sub>2.5</sub></span> showed a significant increase (62 %–70 %) after air spraying. Furthermore, we found that water-soluble organic compounds, particularly organic nitrates, increased significantly via the interactions of reactive gas-phase organics, atmospheric oxidants and aerosol liquid water after air spraying, although the air spraying had a better effect on suppressing road dust than the ground aspersion. Moreover, the formation of PM<span class="inline-formula"><sub>2.5</sub></span> on the road segment where the mist cannon truck passed by was promoted, with an increase of up to 13 % in mass concentration after 25–35 min, on average. Thus, the application of mist cannon trucks potentially worsens the road atmospheric environment through the increase in PM<span class="inline-formula"><sub>2.5</sub></span> levels and the production of a large number of water-soluble organic compounds in PM<span class="inline-formula"><sub>2.5</sub></span>. The overall results provide not only valuable insights to the formation processes of water-soluble organic compounds associated with aerosol liquid water in the road environment but also management strategies to regulate the operation of mist cannon trucks in China.</p>https://acp.copernicus.org/articles/23/6775/2023/acp-23-6775-2023.pdf |
| spellingShingle | Y. Xu X.-N. Dong C. He D.-S. Wu H.-W. Xiao H.-Y. Xiao Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environment Atmospheric Chemistry and Physics |
| title | Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environment |
| title_full | Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environment |
| title_fullStr | Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environment |
| title_full_unstemmed | Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environment |
| title_short | Mist cannon trucks can exacerbate the formation of water-soluble organic aerosol and PM<sub>2.5</sub> pollution in the road environment |
| title_sort | mist cannon trucks can exacerbate the formation of water soluble organic aerosol and pm sub 2 5 sub pollution in the road environment |
| url | https://acp.copernicus.org/articles/23/6775/2023/acp-23-6775-2023.pdf |
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