Effect of Oxytetracycline on Molybdenum Adsorption at the Hematite–Water Interface: Insights From Macroscopic and in Situ ATR‐FTIR Study

• DOI: 10.1002/jpln.202400395
• Publication Date: 2025-03-24T12:10:55Z
• Authors: Christopher O. Anuo; Sudipta Rakshit; Michael E. Essington; Michael Kaiser

ABSTRACT Background Veterinary antibiotic (VA) oxytetracycline (OTC) is commonly used in confined animal feeding operations to treat diseases, as a prophylactic and growth promoter. OTC can enter the environment via various routes, including runoff from stored manure stockpiles application of or contaminated irrigation water agricultural lands. Once introduced, could alter biogeochemical cycling coadsorbing ions, especially micronutrient oxyanions, such molybdate (MoO 4 2− ). Iron oxide minerals, which play major role soil's nutrient oxyanions soil, are known modify plant's availability molybdenum (Mo) adsorption reactions. Aim In this study, we examined impact on Mo retention hematite under different solution properties. Methods We macroscopic situ attenuated total reflectance Fourier transform infrared (ATR‐FTIR) spectroscopic experiments understand interactions. Results The results indicated no reduction extent presence at higher pH. suggested that occurred by forming tetrahedral inner‐sphere surface species hematite. Furthermore, some alterations mechanisms OTC. effect was more prominent ATR‐FTIR results. Conclusion This study contributes better understanding VAs.