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Sorption of dissolved organic C and P to agricultural top- and subsoil

Gjettermann, Birgitte; Styczen, Merete; Hansen, Søren; Borggaard, Ole K. and Hansen, Hans C.B. (2004) Sorption of dissolved organic C and P to agricultural top- and subsoil. In: Bruun, Bente (Ed.) ATV Jord og Grundvand. Vintermøde om jord- og grundvandsforurerening., ATV-fonden for jord og grundvand. DTU., pp. 435-444.

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Online at: http://www.atv-jord-grundvand.dk/

Summary

In order to study the mobility of dissolved organic carbon (DOC) and dissolved organic P (DOP) in soil, the pH-dependent sorption of dissolved organic matter to an agricultural top- and subsoil was investigated. In general, sorption isotherms had convex shapes and DOC and DOP sorption increased with time of reaction. There was a very pronounced effect of pH resulting in much higher sorption of DOC at pH 5 than at pH 7; actually extensive desorption was observed at pH 7 especially for the topsoil. Similar sorption patterns were observed for DOP, but they were not as pronounced as for DOC.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Dissolved organic C Dissolved organic P Initial Mass isotherm Sorption Desorption
Subjects: Environmental aspects
Soil > Nutrient turnover
Soil > Soil quality > Soil biology
Soil > Soil quality
Research affiliation: Denmark > DARCOF II (2000-2005) > I.16 (OKOVAND) Regional groundwater protection by optimised organic farming systems
Denmark > Other organizations
Deposited By: Gjettermann, PhD. Student Birgitte
ID Code:5391
Deposited On:05 Sep 2005
Last Modified:12 Apr 2010 07:31
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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