effects of low-molecular-weight organic acids on phosphorus release from phosphate rocks
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effects of low-molecular weight organic acids on phosphorus sorption in some calcareous soils
the effect of 0, 2, and 5 mm of citric, malic and oxalic acids on phosphorus (p) sorption was evaluated. in the collected soils, the level of total calcium carbonate stood in the range of 4-28%, clay content at 33-56% and the amount of organic matter recorded within 0.6-2.7%. the results indicated that the addition of organic acids causes reduction in p sorption. citric acid in most soils, was ...
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Capillary zone electrophoresis with indirect UV detection at 254 nm was found to be suitable for the determination of organic acids and phosphate in aqueous extracts of soil. The best support electrolyte solution was found to be 10 mM p-hydroxybenzoic acid with 0.5 mM tetradecyltrimethylammonium bromide to reverse electroosmotic flow. This methodology was tested with 9 analytes found in soils: ...
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A. H. Falkovich, E. R. Graber , G. Schkolnik, Y. Rudich, W. Maenhaut, and P. Artaxo Department of Environmental Sciences, Weizmann Institute, Rehovot 76100, Israel Permanent affiliation: Institute of Soil, Water and Environmental Sciences, The Volcani Center, ARO, Bet Dagan 50250, Israel Department of Analytical Chemistry, Institute for Nuclear Sciences, Ghent University, Proeftuinstraat 86, B-...
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A batch experiment was conducted to examine the effects of six low-molecular-weight organic acids on the mobilization of arsenic and trace metals from a range of contaminated soils. The results showed that the organic acids behaved differently when reacting with soil-borne As and trace metals. Oxalic acid and acetic acid had the strongest and weakest capacity to mobilize the investigated elemen...
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متن کاملEffects of organic acids on desorption of phosphate from the surfaces of aluminum hydroxide and complexes
The desorption of phosphate from aluminum (Al) hydroxides by 0.01 mol L KCl in the presence of different organic acids and from Al-OH, Al-P and Al-Oxalate, AlCitrate complexes by organic acids was studied. When phosphate adsorbed on Al(OH)x in the presence and absence of oxalate was desorbed sequentially twice using 0.01 mol L KCl, total desorption rates of phosphate adsorbed in the presence of...
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عنوان ژورنال:
مدیریت خاک و تولید پایدارجلد ۴، شماره ۳، صفحات ۳۳۵-۳۴۳
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