Sorption of 14C-carbofuran in Austrian soils: evaluation of fate and transport of carbofuran in temperate regions
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Carbofuran is an anticholinesterase carbamate commonly used as an insecticide, nematicide and acaricide in agricultural practice throughout the world. However, data on its sorption in temperate soils from Europe is limited. Laboratory studies were conducted to determine the adsorption of carbofuran on three distinct Austrian soils using batch experiments and radiometric techniques. Carbofuran adsorption capacity of the soils was found to be low in the three soils tested and showed to be related to the soils clay and organic carbon contents. The pesticide presented linear adsorption isotherms in all of the three soils. Due to the low sorption of carbofuran in the soils tested and to its high water solubility, there is a risk of migration to water bodies through run off and consequent negative effects on aquatic organisms and soil biota.
KeywordsCarbofuran Temperate soils Sorption Risk assessment Carbamates pesticides fate
We thank Mr. Nasir Rathor for the advice on radio analytical measurements and Prof. Andreas Loibner for the analysis of soil texture.
This study was supported by the Joint FAO/ IAEA programme through the regional technical cooperation project RLA/7/019/.
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