title: Near-infrared spectroscopy study for determination of adsorbed acetochlor in the organic and inorganic bentonites.
abstract: NIR spectroscopy is used to determine acetochlor herbicide adsorption on Na-montmorillonite (NaP) and organically modified montmorillonite (NaOM). Both montmorillonites NIR spectra shows bands at 7061 and 6791 cm(-1). Organo-montmorillonite is characterised by two emphasized bands at 5871 and 5667 cm(-1) that are attributed to the fundamental overtones of the mid-IR bands at 2916 and 2850 cm(-1). Bands at 6017 and 6013 cm(-1) are attributed to acetochlor adsorbed to organo-montmorillonite and Na-montmorillonite, which is confirmed by X-ray powder diffraction (XRPD). Greater quantity of acetochlor is adsorbed to organo-clays compared to non-modified montmorillonite. Acetochlor poses high risk to environmental contamination. Organo-clays are the most useful for removing acetochlor from water and soil.
authors.affiliation: University of Belgrade, Faculty of Agriculture, Nemanjina 6, 11080 Belgrade, Serbia.
authors.forename: Zorica P
authors.initials: ZP
authors.lastname: Tomić
authors.forename: Darko
authors.initials: D
authors.lastname: Ašanin
authors.forename: Rada
authors.initials: R
authors.lastname: Đurović
authors.forename: Aleksandar
authors.initials: A
authors.lastname: Đorđević
authors.forename: Petre
authors.initials: P
authors.lastname: Makreski
mesh_terms: D000327:Adsorption; D001546:Bentonite / Q000737:chemistry*; D033362:Powder Diffraction; D012964:Sodium / Q000737:chemistry; D019265:Spectroscopy, Near-Infrared; D014052:Toluidines / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D014052:Toluidines; D001546:Bentonite; C043377:acetochlor; D012964:Sodium