Cooperative Institute for Research in Environmental Sciences

Analytical Chemistry Seminar: Katie Primm

Monday February 29 2016 @ 12:00 pm
to 1:00 pm

February

29

Mon

2016

12:00 pm - 1:00 pm

Event Type
Seminar
Availability

Open to Public

Audience
  • CIRES employees
  • CU Boulder employees
  • General Public
  • NOAA employees
  • Science collaborators
  • Host
    CIRES, CU Boulder

    Analytical & Environmental Chemistry Division and Atmospheric Chemistry Program Seminar

    Jointly sponsored by the Department of Chemistry and Biochemistry, CIRES, and the Environmental Program

    Supercooling and ice formation of perchlorate and chloride brines under Mars-relevant conditions
    by Katie Primm - Department of Chemistry and Biochemistry-CIRES, University of Colorado Boulder

    Perchlorate and chloride salts, discovered in the Martian regolith at multiple landing sites, may provide pathways for liquid water stability on current Mars. It has previously been assumed that perchlorate and chloride brines form in the Martian regolith via melting or deliquescence, they would be present only briefly because efflorescence into a crystal or freezing to ice would soon occur. Here, we used a Raman microscope to study the temperature and relative humidity (RH) conditions at which magnesium perchlorate and magnesium chloride brines will deliquesce into aqueous droplets, form ice, and effloresce back into crystalline particles.