ORIGINAL RESEARCH
Sorption of Pesticides in Soil and Compost
R. Zbytniewski, B. Buszewski
Departament of Environmental Chemistry and Ecoanalytics,
Faculty of Chemistry, Nicolaus Copernicus University
7 Gagarin Street, 87-100 Torun, Poland
Faculty of Chemistry, Nicolaus Copernicus University
7 Gagarin Street, 87-100 Torun, Poland
Pol. J. Environ. Stud. 2002;11(2):179–184
KEYWORDS
ABSTRACT
A study was carried out on the sorption of the sparingly water-soluble pesticide linuron in various types
of soil with different levels of organic matter. The sorption isotherms of the pesticide were obtained in
bath-equilibrium experiments and the data were fit to Freundlich and Dual Reactive Domain Models. In
general, the sorption was the highest for the soil with greatest content of soil organic matter.
The study also points out the global problem of handling the sewage sludge at wastewater treatment
plants. We studied the compost made in Torun's Wastewater Treatment Plant during sludge fermentation.
To characterise the compost organic matter UV-Vis and 13C CP/MAS NMR spectroscopy were used.
Consequences of the compost use in agriculture are also discussed here. Particular attention is given to
the changes in the behaviour of pesticides applied to soil in the presence of compost organic substances. The
treatment of soils by the compost from sewage sludge may lead to increased retention or removal of
hydrophobic compounds like linuron.
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