| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1235610 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2012 | 6 Pages |
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.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Organo-montmorillonite IR bands change position/intensity with acetochlor adsorption. ► Acetochlor replaced cation in the interlayer surface of organo-montmorillonite. ► Acetochlor adsorption is much higher in organo-clay compared to Na-montmorillonite.
