Ross H Williams

Ross H Williams

  • POST DOC ASSOCIATE
  • 301.286.7750
  • NASA/GSFC
  • Mail Code: 690
  • Greenbelt , MD 20771
  • Employer: UNIV OF MARYLAND COLLEGE PARK
  • Brief Bio

    Ross Williams is an organic geochemist, mass spectrometrist and astrobiologist who began his postdoctoral career at NASA GSFC in 2016. Since then he has worked as part of the Sample Analysis at Mars (SAM) team with a focus on the wet chemistry gc-ms experiments. His work ranges from preservation of organic matter to upstream instrumentation development.

    Current Projects

    Sample Analysis at Mars (SAM) Instrument Suite

    • Upstream optimization of wet chemistry experiments (MTBSTFA & TMAH)
    • Data analysis (GC-MS)

    Irradiated Analog Samples

    • Mars Science Laboratory (MSL) participating scientist work led by Jen Eigenbrode
    • Laboratory analysis of the alteration of organic matter by radiation

    ExCALiBR

    Positions/Employment

    9/2016 - Present

    Postdoctoral Associate

    University of Maryland College Park - CRESST II, NASA Goddard Space Flight Center

    Education

    Massachusetts Institute of Technology - Ph.D. in Geochemistry        

    Paleoenvironment reconstruction in extreme climates using organic geochemical investigations                           

    Rensselaer Polytechnic Institute - B.S. in Geology 

    Selected Publications

    Refereed

    Lewis, J. M., J. L. Eigenbrode, G. Wong, et al. A. C. Mcadam, P. D. Archer, B. Sutter, M. Millan, R. H. Williams, M. Guzman, A. Das, E. Rampe, C. N. Achilles, H. B. Franz, S. Andrejkovicova, C. A. Knudson, and P. R. Mahaffy. 2021. "Pyrolysis of Oxalate, Acetate, and Perchlorate Mixtures and the Implications for Organic Salts on Mars." Journal of Geophysical Research - Planets, [Full Text (Link)] [10.1029/2020JE006803]

    Millan, M., S. Teinturier, C. A. Malespin, et al. J. Y. Bonnet, A. Buch, J. P. Dworkin, J. L. Eigenbrode, C. Freissinet, D. P. Glavin, R. Navarro-Gonzalez, A. Srivastava, J. C. Stern, B. Sutter, C. Szopa, A. J. Williams, R. H. Williams, G. M. Wong, and S. S. Johnson. 2021. "Detection of Organic Molecules on Mars using the Curiosity Rover’s Derivatization Experiment." Nature Astronomy, (Submitted)

    Szopa, C., C. Freissinet, D. Glavin, et al. M. Millan, A. Buch, H. Franz, R. E. Summons, D. Sumner, B. Sutter, J. Eigenbrode, R. Williams, R. Navarro-Gonzales, M. Guzman, C. Malespin, S. Teinturier, P. Mahaffy, and M. Cabane. 2020. "First detections of dichlorobenzene isomers and trichloromethylpropane from organic matter indigenous to Mars mudstone in Gale Crater, Mars: Results from the Sample Analysis at Mars instrument onboard the Curiosity Rover." Astrobiology, 20 (2): [Full Text (Link)] [10.1089/ast.2018.1908]

    Williams, A. J., J. L. Eigenbrode, M. A. Floyd, et al. M. Wilhelm, S. O’Reilly, S. S. Johnson, K. L. Craft, C. A. Knudson, S. Andrejkovičová, J. M. Lewis, A. Buch, D. P. Glavin, C. Freissinet, R. H. Williams, R. Summons, A. C. Mcadam, K. Benison, R. Navarro-González, C. A. Malespin, and P. Mahaffy. 2019. "Recovery of Fatty Acids from Mineralogic Mars Analogs by TMAH Thermochemolysis for the Sample Analysis at Mars Wet Chemistry Experiment on the Curiosity Rover." Astrobiology, 19 (4): [Full Text (Link)] [10.1089/ast.2018.1819]

    Professional Societies

    European Association of Organic Geochemistry, 2013 - Present
    American Geophysical Union, 2012 - Present
    Geological Society of America, 2010 - Present

    Awards

    ·       W.A. Tarr Award (Sigma Gamma Epsilon National Honor Society)

    ·       Class of 1902 Research Prize

    ·       Joseph L. Rosenholtz Award

    ·       Rensselaer Medal for Excellence in Mathematics and Science

    Brief Bio

    Ross Williams is an organic geochemist, mass spectrometrist and astrobiologist who began his postdoctoral career at NASA GSFC in 2016. Since then he has worked as part of the Sample Analysis at Mars (SAM) team with a focus on the wet chemistry gc-ms experiments. His work ranges from preservation of organic matter to upstream instrumentation development.

    Selected Publications

    Refereed

    Lewis, J. M., J. L. Eigenbrode, G. Wong, et al. A. C. Mcadam, P. D. Archer, B. Sutter, M. Millan, R. H. Williams, M. Guzman, A. Das, E. Rampe, C. N. Achilles, H. B. Franz, S. Andrejkovicova, C. A. Knudson, and P. R. Mahaffy. 2021. "Pyrolysis of Oxalate, Acetate, and Perchlorate Mixtures and the Implications for Organic Salts on Mars." Journal of Geophysical Research - Planets [Full Text (Link)] [10.1029/2020JE006803]

    Millan, M., S. Teinturier, C. A. Malespin, et al. J. Y. Bonnet, A. Buch, J. P. Dworkin, J. L. Eigenbrode, C. Freissinet, D. P. Glavin, R. Navarro-Gonzalez, A. Srivastava, J. C. Stern, B. Sutter, C. Szopa, A. J. Williams, R. H. Williams, G. M. Wong, and S. S. Johnson. 2021. "Detection of Organic Molecules on Mars using the Curiosity Rover’s Derivatization Experiment." Nature Astronomy (Submitted)

    Szopa, C., C. Freissinet, D. Glavin, et al. M. Millan, A. Buch, H. Franz, R. E. Summons, D. Sumner, B. Sutter, J. Eigenbrode, R. Williams, R. Navarro-Gonzales, M. Guzman, C. Malespin, S. Teinturier, P. Mahaffy, and M. Cabane. 2020. "First detections of dichlorobenzene isomers and trichloromethylpropane from organic matter indigenous to Mars mudstone in Gale Crater, Mars: Results from the Sample Analysis at Mars instrument onboard the Curiosity Rover." Astrobiology 20 (2): [Full Text (Link)] [10.1089/ast.2018.1908]

    Williams, A. J., J. L. Eigenbrode, M. A. Floyd, et al. M. Wilhelm, S. O’Reilly, S. S. Johnson, K. L. Craft, C. A. Knudson, S. Andrejkovičová, J. M. Lewis, A. Buch, D. P. Glavin, C. Freissinet, R. H. Williams, R. Summons, A. C. Mcadam, K. Benison, R. Navarro-González, C. A. Malespin, and P. Mahaffy. 2019. "Recovery of Fatty Acids from Mineralogic Mars Analogs by TMAH Thermochemolysis for the Sample Analysis at Mars Wet Chemistry Experiment on the Curiosity Rover." Astrobiology 19 (4): [Full Text (Link)] [10.1089/ast.2018.1819]

                                                                                                                                                                                            
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