Articles | Volume 17, issue 9
https://doi.org/10.5194/acp-17-5703-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-17-5703-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Fine particle pH and gas–particle phase partitioning of inorganic species in Pasadena, California, during the 2010 CalNex campaign
Hongyu Guo
School of Earth and Atmospheric Sciences, Georgia Institute of
Technology, Atlanta, GA, USA
Jiumeng Liu
School of Earth and Atmospheric Sciences, Georgia Institute of
Technology, Atlanta, GA, USA
now at: Atmospheric Sciences and Global Change Division, Pacific
Northwest National Laboratory, Richland, WA, USA
Karl D. Froyd
Chemical Sciences Division, Earth System Research Laboratory, NOAA,
Boulder, CO, USA
Cooperative Institute for Research in Environmental Sciences (CIRES),
Boulder, CO, USA
James M. Roberts
Chemical Sciences Division, Earth System Research Laboratory, NOAA,
Boulder, CO, USA
Patrick R. Veres
Chemical Sciences Division, Earth System Research Laboratory, NOAA,
Boulder, CO, USA
Cooperative Institute for Research in Environmental Sciences (CIRES),
Boulder, CO, USA
Patrick L. Hayes
Cooperative Institute for Research in Environmental Sciences (CIRES),
Boulder, CO, USA
Department of Chemistry, Université de Montéal, Montréal,
Québec H3T 1J4, Canada
Department of Chemistry and Biochemistry, University of Colorado
Boulder, Boulder, CO, USA
Jose L. Jimenez
Cooperative Institute for Research in Environmental Sciences (CIRES),
Boulder, CO, USA
Department of Chemistry and Biochemistry, University of Colorado
Boulder, Boulder, CO, USA
Athanasios Nenes
CORRESPONDING AUTHOR
School of Earth and Atmospheric Sciences, Georgia Institute of
Technology, Atlanta, GA, USA
School of Chemical and Biomolecular Engineering, Georgia Institute of
Technology, Atlanta, GA, USA
Foundation for Research and Technology, Hellas, Greece
National Observatory of Athens, Athens, Greece
School of Earth and Atmospheric Sciences, Georgia Institute of
Technology, Atlanta, GA, USA
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Short summary
Fine particle pH is linked to many environmental impacts by affecting particle concentration and composition. Predicted Pasadena, CA (CalNex campaign), PM1 pH is 1.9 and PM2.5 pH 2.7, the latter higher due to sea salts. The model predicted gas–particle partitionings of HNO3–NO3−, NH3–NH4+, and HCl–Cl− are in good agreement, verifying the model predictions. A summary of contrasting locations in the US and eastern Mediterranean shows fine particles are generally highly acidic, with pH below 3.
Fine particle pH is linked to many environmental impacts by affecting particle concentration and...
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