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000103704 0247_ $$2doi$$a10.7936/6rxs-103704
000103704 037__ $$aRDM
000103704 041__ $$aeng
000103704 245__ $$aIrreversible Trace Metal Binding to Goethite Controlled by the Ion Size [dataset]
000103704 260__ $$bWashington University in St. Louis
000103704 269__ $$a2024-07-16
000103704 270__ $$mcatalano@wustl.edu$$pJeffrey Catalano
000103704 336__ $$aDataset
000103704 518__ $$d2024-01-17$$oCollected
000103704 520__ $$aThe dynamics of trace metals at mineral surfaces influence their fate and bioaccessibility in the environment. Trace metals on iron (oxyhydr)oxide surfaces display adsorption–desorption hysteresis, suggesting entrapment after aging. However, desorption experiments may perturb the coordination environment of adsorbed metals, the distribution of labile Fe(III), and mineral aggregation properties, influencing the interpretation of labile metal fractions. In this study, we investigated irreversible binding of nickel, zinc, and cadmium to goethite after aging times of 2–120 days using isotope exchange. Dissolved and adsorbed metal pools exchange rapidly, with half times <90 min, but all metals display a solid-associated fraction inaccessible to isotope exchange. The size of this nonlabile pool is the largest for nickel, with the smallest ionic radius, and the smallest for cadmium, with the largest ionic radius. Spectroscopy and extractions suggest that the irreversibly bound metals are incorporated in the goethite structure. Rapid exchange of labile solid-associated metals with solution demonstrates that adsorbed metals can sustain the dissolved pool in response to biological uptake or fluid flow. Trace metal fractions that irreversibly bind following adsorption provide a contaminant sequestration pathway, limit the availability of micronutrients, and record metal isotope signatures of environmental processes.
000103704 536__ $$oUnited States Department of Energy$$qhttps://ror.org/01bj3aw27$$rROR$$cDE-SC0022213
000103704 536__ $$oNational Science Foundation$$qhttps://ror.org/021nxhr62$$rROR$$cDGE-1745038$$aGraduate Research Fellowship Program
000103704 540__ $$aCreative Commons Attribution (CC BY) 4.0 International$$uhttps://creativecommons.org/licenses/by/4.0/
000103704 650__ $$aEarth and related environmental sciences
000103704 6531_ $$aAdsorption
000103704 6531_ $$aExtraction
000103704 6531_ $$aIsotopes
000103704 6531_ $$aMetals 
000103704 6531_ $$aPhysiology
000103704 655__ $$aTabular
000103704 7001_ $$aLedingham, Greg$$1https://orcid.org/0000-0001-8937-4209$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000103704 7001_ $$aFang, Yihang$$1https://orcid.org/0000-0002-8218-5883$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000103704 7001_ $$aCatalano, Jeffrey$$1https://orcid.org/0000-0001-9311-977X$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000103704 720__ $$aLedingham, Greg$$uWashington University in St. Louis$$1https://orcid.org/0000-0001-8937-4209$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal
000103704 791__ $$tGreg J. Ledingham, Yihang Fang, and Jeffrey G. Catalano Environmental Science & Technology 2024 58 (4), 2007-2016 $$eIsSupplementTo$$aJournalArticle$$whttps://doi.org/10.1021/acs.est.3c06516$$2DOI
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000103704 974__ $$aSt. Louis, MO
000103704 980__ $$aWashU Researcher Data