Soils with pollution-induced water repellency from the Ellerslie, Devon, and Stettler sites (Alberta, Canada) have been characterized by Solid-State Nuclear Magnetic Resonance spectroscopy in comparison with the adjacent readily wettable soils. Changes in the relative quantities of carbon functional groups in the water repellent soils are correlated with the history of the samples. All three water repellent soils are found to have a higher relative percentage of aliphatic carbons, and a lower percentage of carbohydrate and carboxyl carbons, than the corresponding readily wettable soils.; Fractions of soils organic matter, obtained by extraction with a range of solvents have been characterized by Liquid and Solid-State Nuclear Magnetic Resonance spectroscopy, Gas Chromatography, and Fourier Transform Infrared spectroscopy.; The water repellent soils organic matter fractions extractable by methylene chloride were investigated by Fourier Transform Infrared spectroscopy.; A plausible mechanism of interactions between soil natural organic matter and the diagenetic products of petroleum origin is proposed as a result of the present study. (Abstract shortened by UMI.)
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