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Possible heterogeneous chemistry of hydroxymethanesulfonate (HMS) in northern China winter haze

机译：北方冬季阴霾中可能的羟甲磺酸盐（HMS）的可能的异质化学

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摘要

The chemical mechanisms responsible for rapid sulfate production, an important driver of winter haze formation in northern China, remain unclear. Here, we propose a potentially important heterogeneous hydroxymethanesulfonate (HMS) chemical mechanism. Through analyzing field measurements with aerosol mass spectrometry, we show evidence for a possible significant existence in haze aerosols of organosulfur primarily as HMS, misidentified as sulfate in previous observations. We estimate that HMS can account for up to about one-third of the sulfate concentrations unexplained by current air quality models. Heterogeneous production of HMS by SO2 and formaldehyde is favored under northern China winter haze conditions due to high aerosol water content, moderately acidic pH values, high gaseous precursor levels, and low temperature. These anal-yses identify an unappreciated importance of formaldehyde in secondary aerosol formation and call for more research on sources and on the chemistry of formaldehyde in northern China winter.
机译：负责快速硫酸盐生产的化学机制，是中国北部冬季雾霾形成的重要驾驶员，仍不清楚。在此，我们提出了一种潜在的重要的非均相羟甲磺酸磺酸盐（HMS）化学机制。通过用气溶胶质谱分析现场测量，我们显示有机硫磺的可能显着存在于有机硫磺的雾气，主要是HMS，在先前的观察中被误诊为硫酸盐。我们估计，HMS可以考虑最多约三分之一的硫酸盐浓度，这些硫酸盐浓度是目前的空气质量模型无法解释的。通过SO2和甲醛的异质生产HMS在中国北部雾霾条件下有利于由于高气溶胶含水量，适度酸性pH值，高气体前体水平和低温。这些肛门yses鉴定了二次气溶胶形成中甲醛的未经申请的重要性，并呼吁对中国北部甲醛的来源和甲醛化学研究。

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  • 来源
    《Atmospheric chemistry and physics》 |2019年第2期|共15页
  • 作者

    Song Shaojie; Gao Meng; Xu Weiqi; Sun Yele; Worsnop Douglas R.; Jayne John T.; Zhang Yuzhong; Zhu Lei; Li Mei; Zhou Zhen; Cheng Chunlei; Lv Yibing; Wang Ying; Peng Wei; Xu Xiaobin; Lin Nan; Wang Yuxuan; Wang Shuxiao; Munger J. William; Jacob Daniel J.; McElroy Michael B.;

  • 作者单位

    Harvard Univ Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Harvard Univ Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Chinese Acad Sci Inst Atmospher Phys State Key Lab Atmospher Boundary Phys &

    Atmospher Beijing 100029 Peoples R China;

    Chinese Acad Sci Inst Atmospher Phys State Key Lab Atmospher Boundary Phys &

    Atmospher Beijing 100029 Peoples R China;

    Aerodyne Res Inc Billerica MA 01821 USA;

    Aerodyne Res Inc Billerica MA 01821 USA;

    Harvard Univ Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Harvard Univ Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Jinan Univ Inst Mass Spectrometer &

    Atmospher Environm Guangzhou 510632 Guangdong Peoples R China;

    Jinan Univ Inst Mass Spectrometer &

    Atmospher Environm Guangzhou 510632 Guangdong Peoples R China;

    Jinan Univ Inst Mass Spectrometer &

    Atmospher Environm Guangzhou 510632 Guangdong Peoples R China;

    China Natl Environm Monitoring Ctr Beijing 100012 Peoples R China;

    Chinese Acad Meteorol Sci State Key Lab Severe Weather Beijing 100081 Peoples R China;

    Chinese Acad Meteorol Sci State Key Lab Severe Weather Beijing 100081 Peoples R China;

    Chinese Acad Meteorol Sci State Key Lab Severe Weather Beijing 100081 Peoples R China;

    Tsinghua Univ Dept Earth Syst Sci Beijing 100084 Peoples R China;

    Univ Houston Dept Earth &

    Atmospher Sci Houston TX 77004 USA;

    Tsinghua Univ Sch Environm Beijing 100084 Peoples R China;

    Harvard Univ Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Harvard Univ Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Harvard Univ Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

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  • 正文语种 eng
  • 中图分类 大气科学（气象学）;
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