Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze

Severe events of wintertime particulate air pollution in Beijing (winter haze) are associated with high relative humidity (RH) and fast production of particulate sulfate from the oxidation of sulfur dioxide (SO(2)) emitted by coal combustion. There has been considerable debate regarding the mechanis...

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Autores principales: Wang, Junfeng, Li, Jingyi, Ye, Jianhuai, Zhao, Jian, Wu, Yangzhou, Hu, Jianlin, Liu, Dantong, Nie, Dongyang, Shen, Fuzhen, Huang, Xiangpeng, Huang, Dan Dan, Ji, Dongsheng, Sun, Xu, Xu, Weiqi, Guo, Jianping, Song, Shaojie, Qin, Yiming, Liu, Pengfei, Turner, Jay R., Lee, Hyun Chul, Hwang, Sungwoo, Liao, Hong, Martin, Scot T., Zhang, Qi, Chen, Mindong, Sun, Yele, Ge, Xinlei, Jacob, Daniel J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7275061/
https://www.ncbi.nlm.nih.gov/pubmed/32503967
http://dx.doi.org/10.1038/s41467-020-16683-x
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author Wang, Junfeng
Li, Jingyi
Ye, Jianhuai
Zhao, Jian
Wu, Yangzhou
Hu, Jianlin
Liu, Dantong
Nie, Dongyang
Shen, Fuzhen
Huang, Xiangpeng
Huang, Dan Dan
Ji, Dongsheng
Sun, Xu
Xu, Weiqi
Guo, Jianping
Song, Shaojie
Qin, Yiming
Liu, Pengfei
Turner, Jay R.
Lee, Hyun Chul
Hwang, Sungwoo
Liao, Hong
Martin, Scot T.
Zhang, Qi
Chen, Mindong
Sun, Yele
Ge, Xinlei
Jacob, Daniel J.
author_facet Wang, Junfeng
Li, Jingyi
Ye, Jianhuai
Zhao, Jian
Wu, Yangzhou
Hu, Jianlin
Liu, Dantong
Nie, Dongyang
Shen, Fuzhen
Huang, Xiangpeng
Huang, Dan Dan
Ji, Dongsheng
Sun, Xu
Xu, Weiqi
Guo, Jianping
Song, Shaojie
Qin, Yiming
Liu, Pengfei
Turner, Jay R.
Lee, Hyun Chul
Hwang, Sungwoo
Liao, Hong
Martin, Scot T.
Zhang, Qi
Chen, Mindong
Sun, Yele
Ge, Xinlei
Jacob, Daniel J.
author_sort Wang, Junfeng
collection PubMed
description Severe events of wintertime particulate air pollution in Beijing (winter haze) are associated with high relative humidity (RH) and fast production of particulate sulfate from the oxidation of sulfur dioxide (SO(2)) emitted by coal combustion. There has been considerable debate regarding the mechanism for SO(2) oxidation. Here we show evidence from field observations of a haze event that rapid oxidation of SO(2) by nitrogen dioxide (NO(2)) and nitrous acid (HONO) takes place, the latter producing nitrous oxide (N(2)O). Sulfate shifts to larger particle sizes during the event, indicative of fog/cloud processing. Fog and cloud readily form under winter haze conditions, leading to high liquid water contents with high pH (>5.5) from elevated ammonia. Such conditions enable fast aqueous-phase oxidation of SO(2) by NO(2), producing HONO which can in turn oxidize SO(2) to yield N(2)O.This mechanism could provide an explanation for sulfate formation under some winter haze conditions.
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spelling pubmed-72750612020-06-16 Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze Wang, Junfeng Li, Jingyi Ye, Jianhuai Zhao, Jian Wu, Yangzhou Hu, Jianlin Liu, Dantong Nie, Dongyang Shen, Fuzhen Huang, Xiangpeng Huang, Dan Dan Ji, Dongsheng Sun, Xu Xu, Weiqi Guo, Jianping Song, Shaojie Qin, Yiming Liu, Pengfei Turner, Jay R. Lee, Hyun Chul Hwang, Sungwoo Liao, Hong Martin, Scot T. Zhang, Qi Chen, Mindong Sun, Yele Ge, Xinlei Jacob, Daniel J. Nat Commun Article Severe events of wintertime particulate air pollution in Beijing (winter haze) are associated with high relative humidity (RH) and fast production of particulate sulfate from the oxidation of sulfur dioxide (SO(2)) emitted by coal combustion. There has been considerable debate regarding the mechanism for SO(2) oxidation. Here we show evidence from field observations of a haze event that rapid oxidation of SO(2) by nitrogen dioxide (NO(2)) and nitrous acid (HONO) takes place, the latter producing nitrous oxide (N(2)O). Sulfate shifts to larger particle sizes during the event, indicative of fog/cloud processing. Fog and cloud readily form under winter haze conditions, leading to high liquid water contents with high pH (>5.5) from elevated ammonia. Such conditions enable fast aqueous-phase oxidation of SO(2) by NO(2), producing HONO which can in turn oxidize SO(2) to yield N(2)O.This mechanism could provide an explanation for sulfate formation under some winter haze conditions. Nature Publishing Group UK 2020-06-05 /pmc/articles/PMC7275061/ /pubmed/32503967 http://dx.doi.org/10.1038/s41467-020-16683-x Text en © The Author(s) 2020 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Wang, Junfeng
Li, Jingyi
Ye, Jianhuai
Zhao, Jian
Wu, Yangzhou
Hu, Jianlin
Liu, Dantong
Nie, Dongyang
Shen, Fuzhen
Huang, Xiangpeng
Huang, Dan Dan
Ji, Dongsheng
Sun, Xu
Xu, Weiqi
Guo, Jianping
Song, Shaojie
Qin, Yiming
Liu, Pengfei
Turner, Jay R.
Lee, Hyun Chul
Hwang, Sungwoo
Liao, Hong
Martin, Scot T.
Zhang, Qi
Chen, Mindong
Sun, Yele
Ge, Xinlei
Jacob, Daniel J.
Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze
title Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze
title_full Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze
title_fullStr Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze
title_full_unstemmed Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze
title_short Fast sulfate formation from oxidation of SO(2) by NO(2) and HONO observed in Beijing haze
title_sort fast sulfate formation from oxidation of so(2) by no(2) and hono observed in beijing haze
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7275061/
https://www.ncbi.nlm.nih.gov/pubmed/32503967
http://dx.doi.org/10.1038/s41467-020-16683-x
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