Adsorption of Acetochlor Herbicide on Inorganic- and Organic-Modified Bentonite Monitored by Mid-Infrared Spectroscopy and Batch Adsorption

The results of sorption of acetochlor herbicide with different concentrations (1-15 µg/mL) in inorganic- and organic-modified bentonite are presented. Acetochlor sorption in both bentonite types was studied by attenuated total reflectance spectroscopy in the mid-infrared region and by batch equilibr...

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Bibliographic Details
Published in:Spectroscopy letters 2015-10, Vol.48 (9), p.685-690
Main Authors: Tomić, Zorica P., AŠanin, Darko P., Đurović-Pejčev, Rada, ĐorĐević, Aleksandar, Makreski, Petre
Format: Article
Language:English
Subjects:
acetochlor
batch-adsorption
bentonite
mid-infrared spectroscopy
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Summary:The results of sorption of acetochlor herbicide with different concentrations (1-15 µg/mL) in inorganic- and organic-modified bentonite are presented. Acetochlor sorption in both bentonite types was studied by attenuated total reflectance spectroscopy in the mid-infrared region and by batch equilibrium method. Infrared spectroscopy results suggest that the interaction of acetochlor with inorganic (or organic) bentonite takes place by mechanism involving the carbonyl stretching vibration and phenyl ring in the acetochlor molecule. The increase of the acetochlor concentration results in red shift of both corresponding band wavenumbers. Batch adsorption study pointed out more expressed sorption of acetochlor in organic bentonite.
ISSN:0038-7010
1532-2289
DOI:10.1080/00387010.2014.962705