دورية أكاديمية

Hydrogen chloride (HCl) at ground sites during CalNex 2010 and insight into its thermodynamic properties.

التفاصيل البيبلوغرافية
العنوان: Hydrogen chloride (HCl) at ground sites during CalNex 2010 and insight into its thermodynamic properties.
المؤلفون: Tao Y; Department of Chemistry, York University, Toronto, Ontario, Canada., VandenBoer TC; Department of Chemistry, York University, Toronto, Ontario, Canada., Veres PR; Chemical Sciences Laboratory, Earth System Research Laboratory, NOAA, Boulder, Colorado, USA., Warneke C; Chemical Sciences Laboratory, Earth System Research Laboratory, NOAA, Boulder, Colorado, USA., de Gouw JA; Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, Colorado, USA.; Department of Chemistry, University of Colorado Boulder, Boulder, Colorado, USA., Weber RJ; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA., Markovic MZ; Department of Chemistry, University of Toronto, Toronto, Ontario, Canada.; Now at Picarro Inc., Santa Clara, California, USA., Zhao Y; Air Quality Research Center, University of California, Davis, Davis, California, USA., Baker KR; Office of Air Quality Planning and Standards, U.S. EPA, Research Triangle Park, North Carolina, USA., Kelly JT; Office of Air Quality Planning and Standards, U.S. EPA, Research Triangle Park, North Carolina, USA., Murphy JG; Department of Chemistry, University of Toronto, Toronto, Ontario, Canada., Young CJ; Department of Chemistry, York University, Toronto, Ontario, Canada., Roberts JM; Chemical Sciences Laboratory, Earth System Research Laboratory, NOAA, Boulder, Colorado, USA.
المصدر: Journal of geophysical research. Atmospheres : JGR [J Geophys Res Atmos] 2022 Apr 17; Vol. 127 (9), pp. 1-16.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: American Geophysical Union Country of Publication: United States NLM ID: 9882986 Publication Model: Print Cited Medium: Print ISSN: 2169-897X (Print) Linking ISSN: 2169897X NLM ISO Abbreviation: J Geophys Res Atmos Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Washington, D.C. : American Geophysical Union, 1984-
مستخلص: Gas phase hydrogen chloride (HCl) was measured at Pasadena and San Joaquin Valley (SJV) ground sites in California during May and June 2010 as part of the CalNex study. Observed mixing ratios were on average 0.83 ppbv at Pasadena, ranging from below detection limit (0.055 ppbv) to 5.95 ppbv, and were on average 0.084 ppbv at SJV with a maximum value of 0.776 ppbv. At both sites, HCl levels were highest during midday and shared similar diurnal variations with HNO 3 . Coupled phase partitioning behavior was found between HCl/Cl - and HNO 3 /NO 3 - using thermodynamic modelling and observations. Regional modeling of Cl - and HCl using CMAQ captures some of the observed relationships but underestimates measurements by a factor of 5 or more. Chloride in the 2.5-10 μm size range in Pasadena was sometimes higher than sea salt abundances, based on co-measured Na + , implying that sources other than sea salt are important. The acid-displacement of HCl/Cl - by HNO 3 /NO 3 - (phase partitioning of semi-volatile acids) observed at the SJV site can only be explained by aqueous phase reaction despite low RH conditions and suggests the temperature dependence of HCl phase partitioning behavior was strongly impacted by the activity coefficient changes under relevant aerosol conditions (e.g., high ionic strength). Despite the influence from activity coefficients, the gas-particle system was found to be well constrained by other stronger buffers and charge balance so that HCl and Cl - concentrations were reproduced well by thermodynamic models.
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معلومات مُعتمدة: EPA999999 United States ImEPA Intramural EPA
تواريخ الأحداث: Date Created: 20220519 Latest Revision: 20230916
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC9109133
DOI: 10.1029/2021jd036062
PMID: 35586832
قاعدة البيانات: MEDLINE