{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T15:58:08Z","timestamp":1791302288794,"version":"4.1.0"},"reference-count":58,"publisher":"American Chemical Society (ACS)","issue":"39","license":[{"start":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:00:00Z","timestamp":1790208000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001665","name":"Agence Nationale de la Recherche","doi-asserted-by":"publisher","award":["ANR-21-CE04-0009-02"],"award-info":[{"award-number":["ANR-21-CE04-0009-02"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The mechanisms of the abiotic degradation of antibiotics in redox-dynamic environments, such as aquifer sediments or hyporheic zones, remain poorly understood. This study investigates the transformation of nalidixic acid (NAL), a model quinolone antibiotic, triggered by the dark oxygenation of Fe(II) sorbed onto two (oxyhydr)oxides: nanomaghemite and ferrihydrite. Using in situ ATR-FTIR spectroscopy under continuous flow, we demonstrate that exposing the Fe(II)-sorbed surfaces to dissolved O2 initiates the oxidation of adsorbed NAL over timescales of hours, without requiring light or added strong oxidants as H2O2. Real-time spectral analysis reveals mineral-dependent fates of transformation products. On Fe(II)-sorbed maghemite, significant vibrational shifts indicate the oxidative cleavage of the pyridinic ring, mirroring mechanisms observed in heterogeneous Fenton systems, leading to the accumulation of adsorbed byproducts. Significant degradation of NAL is also observed upon oxygenation of Fe(II)-sorbed ferrihydrite, with a slightly different end-product signal. These findings highlight that the aeration of Fe(II)-bearing minerals is a potent natural pathway driving the deep structural transformation of recalcitrant contaminants during environmental redox cycles.<\/jats:p>","DOI":"10.1021\/acsomega.6c07545","type":"journal-article","created":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T16:01:54Z","timestamp":1790265714000},"page":"60096-60103","source":"Crossref","is-referenced-by-count":0,"title":["<i>In Situ<\/i>\n                    ATR-FTIR Analysis of Nalidixic\nAcid Degradation upon Oxygenation of Fe(II)-Sorbed Ferrihydrite and\nMaghemite Surfaces"],"prefix":"10.1021","volume":"11","author":[{"given":"Mbolantenaina","family":"Rakotomalala Robinson","sequence":"first","affiliation":[{"name":"Sorbonne Universite\u0301, CNRS , , ,","place":["Paris, France, F-75005"]},{"name":"Sorbonne Universite\u0301, CNRS , , ,","place":["Paris, France, F-75005"]},{"name":"CNRS, Sorbonne Universite\u0301, MNHN , , 4 Place Jussieu , ,","place":["Paris Cedex 05, France, 75252"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana Carolina","family":"Schuh Frantz","sequence":"additional","affiliation":[{"name":"Sorbonne Universite\u0301, CNRS , , ,","place":["Paris, France, F-75005"]},{"name":"CNRS, Sorbonne Universite\u0301, MNHN , , 4 Place Jussieu , ,","place":["Paris Cedex 05, France, 75252"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alberto","family":"Mezzetti","sequence":"additional","affiliation":[{"name":"Sorbonne Universite\u0301, CNRS , , ,","place":["Paris, France, F-75005"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sylvie","family":"Ne\u0301lieu","sequence":"additional","affiliation":[{"name":"Universite\u0301 Paris-Saclay, INRAE, AgroParisTech , , ,","place":["Palaiseau, France, 91120"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xavier","family":"Carrier","sequence":"additional","affiliation":[{"name":"Sorbonne Universite\u0301, CNRS , , ,","place":["Paris, France, F-75005"]},{"name":"Sorbonne Universite\u0301, CNRS , , ,","place":["Paris, France, F-75005"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9304-4202","authenticated-orcid":true,"given":"Guillaume","family":"Morin","sequence":"additional","affiliation":[{"name":"CNRS, Sorbonne Universite\u0301, MNHN , , 4 Place Jussieu , ,","place":["Paris Cedex 05, France, 75252"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,24]]},"reference":[{"key":"2026100610463050500_cit1","doi-asserted-by":"publisher","first-page":"68","DOI":"10.1016\/j.jhazmat.2013.01.054","article-title":"Superoxide Mediated Production of\nHydroxyl Radicals by Magnetite Nanoparticles: Demonstration in the\nDegradation of 2-Chlorobiphenyl","volume":"250\u2013251","author":"Fang","year":"2013","journal-title":"J. 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Saf."},{"issue":"11","key":"2026100610463050500_cit44","doi-asserted-by":"publisher","DOI":"10.1002\/cphc.202500857","article-title":"Heterogeneous Fenton\nDegradation of Nalidixic Acid on Fe(II)-Sorbed Maghemite, as Probed\nby In Situ Attenuated Total Reflectance-Fourier Transform Infrared\nSpectroscopy","volume":"27","author":"Schuh Frantz","year":"2026","journal-title":"ChemPhysChem"},{"issue":"46","key":"2026100610463050500_cit45","doi-asserted-by":"publisher","first-page":"19403","DOI":"10.1039\/D4NJ03440F","article-title":"Investigating\nNalidixic Acid Adsorption onto Ferrihydrite and Maghemite Surfaces:\nMolecular-Level Insights via Continuous-Flow ATR-FTIR Spectroscopy","volume":"48","author":"Schuh Frantz","year":"2024","journal-title":"New J. 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Colloid Interface Sci."},{"key":"2026100610463050500_cit55","volume-title":"Infrared and Raman\nSpectra of Inorganic\nand Coordination Compounds, Part B: Applications in Coordination,\nOrganometallic, and Bioinorganic Chemistry","author":"Kazuo Nakamoto.","year":"1986","edition":"4th"},{"key":"2026100610463050500_cit56","unstructured":"Schuh Frantz, A. 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