Insights into air pollution chemistry and sulphate formation from nitrous acid (HONO) measurements during haze events in Beijing

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Insights into air pollution chemistry and sulphate formation from nitrous acid (HONO) measurements during haze events in Beijing. / Bloss, William J.; Kramer, Louisa; Crilley, Leigh R.; Vu, Tuan; Harrison, Roy M.; Shi, Zongbo; Lee, James D.; Squires, Freya A.; Whalley, Lisa K.; Slater, Eloise; Woodward-Massey, Robert; Ye, Chunxiang; Heard, Dwayne E.; Tong, Shengrui; Hou, Siqi; Sun, Yele; Xu, Jingsha; Wei, Lianfang; Fu, Pingqing.

In: Faraday Discussions, Vol. 226, 03.2021, p. 223-238.

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Bloss, William J. ; Kramer, Louisa ; Crilley, Leigh R. ; Vu, Tuan ; Harrison, Roy M. ; Shi, Zongbo ; Lee, James D. ; Squires, Freya A. ; Whalley, Lisa K. ; Slater, Eloise ; Woodward-Massey, Robert ; Ye, Chunxiang ; Heard, Dwayne E. ; Tong, Shengrui ; Hou, Siqi ; Sun, Yele ; Xu, Jingsha ; Wei, Lianfang ; Fu, Pingqing. / Insights into air pollution chemistry and sulphate formation from nitrous acid (HONO) measurements during haze events in Beijing. In: Faraday Discussions. 2021 ; Vol. 226. pp. 223-238.

Bibtex

@article{ac44a5111ee44e35be5e61220adbc01a,
title = "Insights into air pollution chemistry and sulphate formation from nitrous acid (HONO) measurements during haze events in Beijing",
abstract = "Wintertime urban air pollution in many global megacities is characterised by episodic rapid increase in particulate matter concentrations associated with elevated relative humidity – so-called haze episodes, which have become characteristic of cities such as Beijing. Atmospheric chemistry within haze combines gas- and condensed-phase chemical processes, leading to the growth in secondary species such as sulphate aerosols. Here, we integrate observations of reactive gas phase species (HONO, OH, NOx) and time-resolved aerosol composition, to explore observational constraints on the mechanisms responsible for sulphate growth during the onset of haze events. We show that HONO abundance is dominated by established fast gas-phase photochemistry, but the consideration of the additional formation potentially associated with condensed-phase oxidation of S species by aqueous NO2 leading to NO2− production and hence HONO release, improves agreement between observed and calculated gas-phase HONO levels. This conclusion is highly dependent upon aerosol pH, ionic strength and particularly the parameterisation employed for S(IV) oxidation kinetics, for which an upper limit is derived.",
author = "Bloss, {William J.} and Louisa Kramer and Crilley, {Leigh R.} and Tuan Vu and Harrison, {Roy M.} and Zongbo Shi and Lee, {James D.} and Squires, {Freya A.} and Whalley, {Lisa K.} and Eloise Slater and Robert Woodward-Massey and Chunxiang Ye and Heard, {Dwayne E.} and Shengrui Tong and Siqi Hou and Yele Sun and Jingsha Xu and Lianfang Wei and Pingqing Fu",
year = "2021",
month = mar,
doi = "10.1039/D0FD00100G",
language = "English",
volume = "226",
pages = "223--238",
journal = "Faraday Discussions",
issn = "1359-6640",
publisher = "Royal Society of Chemistry",

}

RIS

TY - JOUR

T1 - Insights into air pollution chemistry and sulphate formation from nitrous acid (HONO) measurements during haze events in Beijing

AU - Bloss, William J.

AU - Kramer, Louisa

AU - Crilley, Leigh R.

AU - Vu, Tuan

AU - Harrison, Roy M.

AU - Shi, Zongbo

AU - Lee, James D.

AU - Squires, Freya A.

AU - Whalley, Lisa K.

AU - Slater, Eloise

AU - Woodward-Massey, Robert

AU - Ye, Chunxiang

AU - Heard, Dwayne E.

AU - Tong, Shengrui

AU - Hou, Siqi

AU - Sun, Yele

AU - Xu, Jingsha

AU - Wei, Lianfang

AU - Fu, Pingqing

PY - 2021/3

Y1 - 2021/3

N2 - Wintertime urban air pollution in many global megacities is characterised by episodic rapid increase in particulate matter concentrations associated with elevated relative humidity – so-called haze episodes, which have become characteristic of cities such as Beijing. Atmospheric chemistry within haze combines gas- and condensed-phase chemical processes, leading to the growth in secondary species such as sulphate aerosols. Here, we integrate observations of reactive gas phase species (HONO, OH, NOx) and time-resolved aerosol composition, to explore observational constraints on the mechanisms responsible for sulphate growth during the onset of haze events. We show that HONO abundance is dominated by established fast gas-phase photochemistry, but the consideration of the additional formation potentially associated with condensed-phase oxidation of S species by aqueous NO2 leading to NO2− production and hence HONO release, improves agreement between observed and calculated gas-phase HONO levels. This conclusion is highly dependent upon aerosol pH, ionic strength and particularly the parameterisation employed for S(IV) oxidation kinetics, for which an upper limit is derived.

AB - Wintertime urban air pollution in many global megacities is characterised by episodic rapid increase in particulate matter concentrations associated with elevated relative humidity – so-called haze episodes, which have become characteristic of cities such as Beijing. Atmospheric chemistry within haze combines gas- and condensed-phase chemical processes, leading to the growth in secondary species such as sulphate aerosols. Here, we integrate observations of reactive gas phase species (HONO, OH, NOx) and time-resolved aerosol composition, to explore observational constraints on the mechanisms responsible for sulphate growth during the onset of haze events. We show that HONO abundance is dominated by established fast gas-phase photochemistry, but the consideration of the additional formation potentially associated with condensed-phase oxidation of S species by aqueous NO2 leading to NO2− production and hence HONO release, improves agreement between observed and calculated gas-phase HONO levels. This conclusion is highly dependent upon aerosol pH, ionic strength and particularly the parameterisation employed for S(IV) oxidation kinetics, for which an upper limit is derived.

UR - http://www.scopus.com/inward/record.url?scp=85103279352&partnerID=8YFLogxK

U2 - 10.1039/D0FD00100G

DO - 10.1039/D0FD00100G

M3 - Article

VL - 226

SP - 223

EP - 238

JO - Faraday Discussions

JF - Faraday Discussions

SN - 1359-6640

ER -