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000103641 005__ 20230826044628.0
000103641 0247_ $$2doi$$a10.7936/6rxs-103641
000103641 037__ $$aRDM
000103641 041__ $$aeng
000103641 245__ $$aAmino Acid Adsorption to Montmorillonite: Selectivity and Binding Mechanisms
000103641 269__ $$a2023-08-25
000103641 270__ $$memillman@wustl.edu$$pEmily Millman
000103641 336__ $$aDataset
000103641 518__ $$d2020-08-01/2023-01-31$$oCollected
000103641 520__ $$aConcentrating simple organic molecules, such as amino acids, in the adsorbed phase could have been an early step in prebiotic evolution towards more complex bio-macromolecules on the early Earth. Smectite clay minerals represent potential selective sorbents for prebiotic molecules because of their negative structural charge and high surface area. This study explored the selective uptake and adsorption mechanisms of amino acids to montmorillonite, a well-characterized smectite. The effects of dissolved salt composition (NaCl vs MgCl₂) and pH (5 vs 7) on the uptake of amino acids to montmorillonite were investigated using adsorption isotherms. Amino acid binding to the clay mineral was determined through analysis of the final fluid composition using high-performance liquid chromatography (HPLC). The adsorption mechanisms of basic amino acids (L-arginine and L-lysine) were characterized using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy and powder X-ray diffraction (XRD).
000103641 536__ $$oWashington University in St. Louis$$qhttps://ror.org/01yc7t268$$rROR
000103641 536__ $$oNational Aeronautics and Space Administration$$qhttps://ror.org/027ka1x80$$rROR$$c80NSSC19M0069$$aNASA Astrobiology Program
000103641 536__ $$oAmerican Chemical Society$$qhttps://ror.org/059dqb057$$rROR$$c60057-DNI4$$aACS Petroleum Research Fund
000103641 540__ $$aCreative Commons Attribution (CC BY) 4.0 International$$uhttps://creativecommons.org/licenses/by/4.0/
000103641 650__ $$aEarth and related environmental sciences
000103641 6531_ $$aprebiotic chemistry
000103641 6531_ $$aamino acids
000103641 6531_ $$amontmorillonite
000103641 6531_ $$aadsorption
000103641 6531_ $$aselectivity
000103641 7001_ $$aMillman, Emily$$1https://orcid.org/0009-0002-5075-943X$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000103641 7001_ $$aChatterjee, Anamika$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000103641 7001_ $$aParker, Kimberly$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000103641 7001_ $$aCatalano, Jeffrey$$1https://orcid.org/0000-0001-9311-977X$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000103641 720__ $$aFlynn, Elaine$$uWashington University in St. Louis$$1https://orcid.org/0000-0002-1164-0148$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal
000103641 720__ $$aWang, Alian$$uWashington University in St. Louis$$1https://orcid.org/0000-0002-0726-2869$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal
000103641 720__ $$aYong, Copland$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal
000103641 720__ $$aCarpenter, Paul$$uWashington University in St. Louis$$1https://orcid.org/0000-0002-4639-3247$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal
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000103641 980__ $$aWashU Researcher Data