Adsorption of Glyphosate on Goethite:  Molecular Characterization of Surface Complexes

• Published in: Environmental science & technology Vol. 36; no. 14; pp. 3090 - 3095
• Main Authors: Sheals, Julia, Sjöberg, Staffan, Persson, Per
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 15.07.2002
• Subjects: Adsorption; Agronomy. Soil science and plant productions; analogs & derivatives; Applied sciences; Biological and medical sciences; Biological and physicochemical properties of pollutants. Interaction in the soil; Chemicals; Chemistry; Earth sciences; Earth, ocean, space; Engineering and environment geology. Geothermics; environmental fate; Exact sciences and technology; Fourier transforms; Fundamental and applied biological sciences. Psychology; Glycine; Glycine - analogs & derivatives; Glycine - chemistry; Glyphosate; Herbicides; Herbicides - chemistry; Hydrogen-Ion Concentration; Iron Compounds; Iron Compounds - chemistry; methods; Minerals; Molecules; Pollution; Pollution, environment geology; Scientific imaging; Soil and sediments pollution; Soil and water pollution; Soil science; Spectroscopy, Fourier Transform Infrared; Spectrum analysis; Water Purification; Water Purification - methods; Complexation; Surface reaction; Fourier transform spectroscopy; Molecular structure; Pollutant behavior; Pesticides; Crystal chemistry; Geochemistry; X ray; Soil pollution; Glyphosate; Herbicide; Iron Hydroxides oxides; Sorption; Infrared spectrometry; Adsorption; Aminoacid; Inner sphere; Reaction mechanism; Photoelectron spectrometry; Soil interaction; Goethite; Intramolecular hydrogen bond; Speciation

As a component of herbicides, the fate of glyphosate (PMG) in the environment is of significant interest. The nature of PMG adsorption on mineral surfaces plays a significant role in the degradation of PMG. The adsorption of PMG on goethite (α-FeOOH) has been studied as a function of pH and PMG conc...