Ph.D. (September 2010 – May 2015) in Earth & Planetary Sciences, Washington University in St. Louis. Dissertation: “Ion interactions at the mineral-water interface during biogeochemical iron and manganese cycling.” Advisor: Dr. Jeffrey G. Catalano
A.M. (September 2010 – May 2012) in Earth & Planetary Sciences, Washington University in St. Louis. Advisor: Dr. Jeffrey G. Catalano
B.S. (September 2005 – May 2009) in Chemistry, Sewanee: The University of the South, cum laude. Research Advisor: Dr. Robert E. Bachman, Advisor: Dr. John H. Shibata
2017-present Assistant Professor, Geology, Washington & Lee University
2015-2017 Peter Buck Postdoctoral Fellow, Mineral Sciences, National Museum of Natural History, Smithsonian Institution
2010-2015 Doctoral Candidate, Earth & Planetary Sciences, Washington University in St. Louis
2012-2014 Washington University STEM-Teaching As Research Intern, Washington University in St. Louis
2008-2009 Undergraduate Research Assistant, Chemistry, Sewanee
2008 I. Croom Beatty Research Intern, Chemistry, Sewanee
Peter Buck Postdoctoral Fellow, Mineral Sciences Department, National Museum of Natural History, Smithsonian Institution, 2015-2017:
Mycogenic Mn oxide phase transformation behavior and effects on trace metals.
Research involves the investigation of initial and secondary mycogenic Mn oxide precipitates via diffraction analyses and transmission X-ray absorption fine structure (XAFS) spectroscopy, and the speciation of trace metals (Ni, Zn, Co, and Cr) upon aging the solid precipitates via wet chemistry analyses and fluorescence-yield XAFS spectroscopy.
Ph.D. Candidate, Earth & Planetary Sciences Department, Washington University, 2010-2015:
Mn(II) interactions with trace metals & Mn oxides.
Research consisted of obtaining trace metal (Ni) adsorption isotherms by analysis of element concentrations with inductively coupled plasma-optical emission spectroscopy (ICP-OES) and determining the effect of Mn(II) on the speciation of Ni, Zn, Co, and As(V) associated with solid Mn(IV/III) oxides by fluorescence-yield XAFS spectroscopy.
Effect of aqueous Mn(II) on Mn oxide structures.
Research entailed synthesizing environmentally-relevant Mn oxides, characterizing synthesized Mn oxide materials by BET and Mn oxidation state determinations, preparing Mn(II) adsorption isotherms by analysis of element concentrations with ICP OES, and identifying the effects of Mn(II) on Mn(IV/III) oxide oxidation state using transmission X-ray absorption near edge structure (XANES) spectroscopy and on Mn(IV/III) oxide structures using transmission extended X-ray absorption fine structure (EXAFS) and powder X-ray diffraction (XRD).
Fe(II) interactions with oxoanions, Ni & Fe oxides.
Research involved synthesizing metal-substituted and pure Fe(III) oxides, characterizing synthesized Fe oxide materials by BET and fractional dissolution measurements, preparing Fe(II), phosphate, sulfate, and Ni adsorption edges/isotherms by analysis of element concentrations with ICP-OES and sulfate concentrations with ion chromatography (IC), determining changes to molecular configurations of oxoanions by obtaining and fitting attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectra, and identifying changes to Ni speciation by XAFS spectroscopy.
Undergraduate Research Assistant, Chemistry Department, Sewanee, 2008–2009:
Solution aggregation of bipyridine Pt(II) complexes.
Research focused on solution aggregation of bipyridine Pt(II) complexes via intramolecular metal-metal interactions hypothesized to be important in producing their photoluminescent and polymorphic behavior. Research duties consisted of synthesis and analysis by nuclear magnetic resonance (NMR) spectroscopy and ultra-violet visible (UV-vis) spectroscopy.
I. Croom Beatty Research Internship, Chemistry Department, Sewanee, 2008:
Kinetic behavior of Au(I) thiolate complexes.
Investigated the rate and order of a novel ligand exchange reaction in gold thiolate complexes. Duties included analyzing Au(I) thiolate complexes with time-dependent UV-vis spectroscopy.
Assistant Professor, Geology Department, Washington and Lee University:
1. GEOL 101, General Geology (class + lab course) Winter 2018
2. GEOL 150, Water Resources (class) Winter 2018
1. GEOL 240, Hydrology (class + lab course) Fall 2017
Graduate Student, Earth & Planetary Sciences Department, Washington University in St. Louis:
STEM Teaching-as-Research (WU-STAR) Intern, 2012-2014.
Designed and implemented a research project comparing structured-inquiry modeling assignments with traditional rote-based modeling assignments on enhancing students’ conceptual knowledge and ability to interpret data and graphs. Learning gains were assessed by changes in pre– and post– questions for each assignment. Audited a course on Teaching-as-Research methodology, and presented the findings of this research at Washington University’s Graduate Research Symposium in Spring 2013 and Washington University’s Education Research Group (ERG) in Fall 2013.
Teaching Assistant, EPSc 444 (Environmental Geochemistry), Fall 2012.
Co-lectured the course, prepared and led discussions of assignment material, held weekly office hours, graded modeling assignments, and implemented the STEM Teaching-as-Research project described above.
Student Mentor, Students & Teachers as Research Scientists (STARS), Summer 2012.
Mentored a high school student in the Catalano lab over the summer as part of the St. Louis STARS program. Responsibilities included developing a successful, independent research project for the high school student, guiding the research through daily progress meetings with the student, teaching the student about instruments and lab techniques, and providing constructive feedback each week on paper writing skills.
Teaching Assistant, EPSc 201 (Earth & the Environment), Fall 2011.
Taught a weekly lab section of 20 students, prepared and presented short lab lectures, graded exams and lab assignments, and held weekly office hours.
Guest Lecture, Biology 101 (Nerinx Hall High School, St. Louis), Spring 2011.
Held a 2 hour lecture and Q&A session to a junior high school biology class on Earth and Planetary Sciences. Talked briefly about geophysics, geology, and geochemistry, focusing on the geodynamo, the Tõhoku earthquake, ArcGIS applications, and my research on ion adsorption to iron oxide minerals.
Activity Leader, Association for Women in Science (AWIS), 2010 & 2011.
Co-led and designed discussions and demonstrations on mineralogy and radial chromatography for high school female students interested in STEM fields at the annual Women in Science Day hosted by the AWIS, St. Louis Regional Chapter.
Teaching Assistant, EPSc 108 (Oceans & the Atmosphere), Fall 2010.
Held weekly office hours for 80 students and graded assignments and exams.
Undergraduate Student, Chemistry Department, Sewanee: The University of the South:
Lab Assistant, CHEM 308 (Inorganic Chemistry), 2008.
Assisted with the weekly lab section, taught students how to use instruments (ATR-FTIR and UV-vis spectroscopy), collected NMR spectra of students’ samples, and helped students interpret data.
Tutor, Chemistry Department, 2007-2008.
Held weekly sessions to provide tutoring for Sewanee students in General Chemistry I & II and Advanced General Chemistry.
Awards, Scholarships, Internships, & Fellowships
Peter Buck Postdoctoral Fellowship, Smithsonian Institution, 2015-present [link]
Washington University STEM Teaching-As-Research Internship, 2012-2014 [link]
Carl Tolman Prize for Excellence as a Teaching Assistant, Earth & Planetary Sciences, Washington University, 2013 [link]
Goldschmidt Travel Grant, Florence, Italy, 2013
Dean’s Award for Teaching Excellence for 2012-2013, Washington University, 2013 [link]
Teaching Assistant Letter of Recognition, Earth & Planetary Sciences, Washington University, 2012
Goldschmidt Travel Grant, Montreal, Quebec, 2012
Wilkins Scholar, Sewanee, 2005-2009
Tennessee Hope Scholar, Sewanee, 2005-2009
Order of the Gownsmen (academic honor society), Sewanee, 2006-2009
I. Croom Beatty Chemistry Research Internship, Sewanee, 2008
International X-ray Absorption Society
Mineralogical Society of America
National Association of Geoscience Teachers
Omicron Delta Kappa National Leadership Honor Society
The Geochemical Society
Reviewer for: Environmental Science & Technology, Geochimica et Cosmochimica Acta, American Mineralogist
Peer Mentor, Earth & Planetary Sciences, Washington University in St. Louis, 2012-2014.
Student Mentor, Students & Teachers as Research Scientists (STARS), Summer 2012.
Activity Leader, Association for Women in Science (AWIS), 2010 & 2011.
XAFS spectroscopy, ATR-FTIR spectroscopy, ICP-OES, IC, XRD, NMR spectroscopy, UV-vis spectroscopy, BET analysis, SEM
MatLab & Mathematica, Geochemist’s Workbench, ArcGIS, SixPack, Ifeffit—Athena, Hephaestus, ATOMS, FEFF
(*denotes presenting author)
*Hinkle, M.A.G., Rosenfeld, C.E., Santelli, C.M., Post, J.A. "Changes in Ni binding to and uptake by mycogenic Mn oxides with aging." Invited oral presentation by Hinkle at the Soil Science Society of America, Tampa, FL. October 2017
*Rosenfeld, C.E., Hinkle, M.A.G., James, B.R., and C.M. Santelli. "Mycogenic minerals – Impacts of multi-metal systems on fungal mineral production and metal sequestration." Invited oral presentation by Rosenfeld at the Soil Science Society of America, Tampa, FL. 2017
*Hinkle M.A.G., Flynn E.D., Dye K.G., Santelli C.M., Post J.E., Catalano J.G. (2017) "Interfacial reactions during Mn biogeochemical cycling: Impact on Mn oxide structures and reactivities towards trace metals." Invited oral presentation by Hinkle at the 253rd American Chemical Society Meeting, San Francisco, CA, April 2017.
*Rosenfeld, C.E., Hinkle, M.A.G., James, B.R., and C.M. Santelli (2017) "Fungal-selenium interactions in experimental and field systems." Invited oral presentation by Rosenfeld at the 253rd American Chemical Society Meeting, San Francisco, CA, April 2017.
*Hinkle M.A.G. (2016) “Interfacial reactions during manganese biogeochemical cycling: Impact on mineral transformations and mycogenic manganese oxide formation.” Invited oral presentation at the Department of Geology, University of Maryland Geochemistry Seminar, April 2016.
*Hinkle M.A.G., Santelli C.M., Post J.E. (2015) “Impact of buffers on mycogenic manganese oxide formation.” Oral presentation by Hinkle at The Geological Society of America Annual Meeting, Baltimore, MD, November 2015.
*Hinkle M.A.G. (2015) “Interfacial reactions during Fe and Mn biogeochemical cycling: Impact on mineral transformations and trace element fate.” Invited oral presentation at the Department of Chemistry, Sewanee, October 2015.
*Catalano J.G., Hinkle M.A.G. (2015) “Contrasting effects on trace element fate of iron and manganese oxide transformations induced by electron transfer reactions.” Invited oral presentation by Catalano at 25th Goldschmidt Conference, Prague, Czech Republic, August 2015.
*Catalano J.G., Becker K.G., Flynn E.D., Frierdich A.J., Gadol H.J., Hinkle M.A.G., Luo, Y. (2014) “Trace element redistribution during iron oxide recrystallization.” Invited oral presentation by Catalano at Telluride Science Research Center Workshop: Biogeochemistry and Redox Transformations of Iron, Telluride, CO, August 2014.
*Catalano J.G., Becker K.G., Flynn E.D., Frierdich A.J., Gadol H.J., Hinkle M.A.G. (2014) “Trace element partitioning between iron oxides and aqueous solutions: Evidence for recrystallization.” Invited oral presentation by Catalano at 24th Goldschmidt Conference, Sacremento, CA, June 2014.
*Hinkle M.A.G., Catalano J.G. (2013) “Effect of phosphate and sulfate on Fe(II)-catalyzed trace metal incorporation into and release from Fe(III) oxides.” Oral presentation at 23rd Goldschmidt Conference, Florence, Italy, Mineralogical Magazine, 2013, 77(5), 1301.
*Catalano J.G., Becker K.G., Frierdich A.J., Hinkle M.A.G., Luo Y., Otemuyiwa B. (2013) “Trace element and contaminant fate during Fe(II)-catalyzed iron oxide surface transformations.” Invited oral presentation by Catalano at 23rd Goldschmidt Conference, Florence, Italy, Mineralogical Magazine, 2013, 77(5), 840.
*Hinkle M.A.G., Catalano J.G. “Interactions of phosphate and sulfate with aqueous Fe(II) on Fe(III) oxide surfaces.” (2013) Oral presentation at 245th American Chemical Society Meeting, New Orleans, LA, April 2013.
*Hinkle M.A.G., Catalano J. G. (2013) “A comparison of assignment design: Enhancing conceptual and scientific knowledge with structured inquiry methods.” Poster presentation at 17th Graduate Research Symposium, Washington University in St. Louis, MO, February 2013.
*Hinkle M.A.G., Catalano J.G. (2012) “Interaction of Fe(II) with phosphate and sulfate on iron oxide surfaces: Implications for interfacial electron transfer.” Poster presentation at Midwest Geobiology Symposium, St. Louis, MO, September, 2012.
*Hinkle M.A.G., Catalano J.G. (2012) “Interaction of Fe(II) with phosphate and sulfate on iron oxide surfaces: Implications for interfacial electron transfer.” Poster presentation at 22nd Goldschmidt Conference, Montreal, QC, Mineralogical Magazine, 2012, 76(6), 1845.
*Gray M.A., Buckley A.J., Bachman R.E. (2008) “Solution aggregation and complexation in bipyridine platinum(II) dihalide complexes.” Poster presentation at 60th Southeast Regional Meeting of the American Chemical Society, Nashville, TN, November 2008, SERM-914.
Hinkle M.A.G., Becker K.G., Catalano J.G. “Impact of Mn(II)-Manganese oxide reactions on Ni and Zn speciation.” Environmental Science & Technology 51(6), 3187-3196. [link]
Hinkle M.A.G., Flynn E.D., Catalano J.G. “Structural response of phyllomanganates to wet aging and Mn(II).” Geochimica et Cosmochimica Acta 192, 220-234. [link]
Arvidson R.E., Squyres S.W., Morris R.V., Knoll A.H., Gellert R., Clark B.C., Catalano J.G., Jolliff B.L., McLennan S.M., Herkenhoff K.E., VanBommel S., Mittlefehldt D.W., Grotzinger J.P., Guinness E.A., Johnson J.R., Bell III J.F., Farrand W.H., Stein N., Fox V.K., Golombek M.P., Hinkle M.A.G., Calvin W.M., Desouza Jr. P.A. (2016) “High concentrations of manganese and sulfur in deposits on Murray Ridge, Endeavour Crater, Mars.” American Mineralogist 101, 1389-1405. [link]
Hinkle M.A.G. and Catalano J.G. (2015) “Effect of phosphate and sulfate on Ni repartitioning during Fe(II)-catalyzed Fe(III) oxide mineral recrystallization.” Geochimica et Cosmochimica Acta 165, 62-74. [link]
Hinkle M.A.G., Wang Z., Giammar D.E., Catalano J.G. (2015) “Interaction of Fe(II) with phosphate and sulfate on iron oxide surfaces.” Geochimica et Cosmochimica Acta 158, 130-146. [link]
Bachman R.E., Bodolosky-Bettis S.A., Pyle C.J., Gray M.A. (2008) “Reversible oxidative addition and reductive elimination of fluorinated disulfides at gold (I) thiolate complexes: A new ligand exchange mechanism.” Journal of the American Chemical Society 130, 14303-14310. [link]
MANUSCRIPTS IN PREPARATION
Hinkle M.A.G., Post J., Santelli C.M. "Effect of Good's Buffers on Mycogenic Manganese Oxide Formation.” Planned submission October 2017.