Journal
GEODERMA
Volume 137, Issue 3-4, Pages 426-431Publisher
ELSEVIER
DOI: 10.1016/j.geoderma.2006.09.005
Keywords
soil phosphorus; P in groundwater; P in interstitial water; adsorption isotherms
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Phosphorus content of soil profiles, interstitial water, and shallow groundwater was determined in a semiurban region of Buenos Aires city in order to examine phosphorus leaching. Soils from different places and position in the slope were characterized and analysed for their P sorption-desorption capacities in order to understand transport processes and to assess potential environmental risks. Adsorption increases with depth and decreases with increasing additions of phosphorous. Interstitial water at 0.6 m depth showed greater P concentrations than shallow groundwater (9 to 30 m depth) in accordance with the importance of clays for P adsorption. (c) 2006 Elsevier B.V. All rights reserved.
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