Effects of dissolved organic carbon on sorption of 3,4-dichloroaniline and 4-bromoaniline in a calcareous soil |
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Authors: | González-Pradas E Fernández-Pérez M Flores-Céspedes F Villafranca-Sánchez M Ureña-Amate M D Socías-Viciana M Garrido-Herrera F |
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Affiliation: | Department of Inorganic Chemistry, University of Almería, La Ca?ada de San Urbano s/n, Almería 04120, Spain. |
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Abstract: | To evaluate the effects of dissolved organic carbon on sorption of 3,4-dichloroaniline (3,4-DCA) and 4-bromoaniline (4-BA) on soils, batch sorption experiments were carried out. The soil used was a typical calcareous soil from south-eastern Spain. Two different types of dissolved organic carbon were used, that is, dissolved organic carbon extracts from a commercial peat (DOC-PE) and high-purity tannic acid (DOC-TA). The experiments were carried out in a 0.01 M CaCl2 aqueous medium at 25 degrees C. The results obtained from the sorption experiments show that the presence of both DOC-PE and DOC-TA, over a concentration range of 15-100 mg l-1, produced in all cases, an increase in the amount of 3,4-DCA and 4-BA adsorbed on the soil studied. |
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