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Series / Report no.
Open Access
Type
Report
Language
en
Date
1990-08-31
Research Projects
Organizational Units
Journal Issue
Title
Behaviour of pesticides in aquifer materials:
Laboratory column experiments
Translated Title
Gedrag van bestrijdingsmiddelen in de ondergrond:
Kolom experimenten op laboratoriumschaal.
Published in
Abstract
Abstract niet beschikbaar
Sorption of pesticides by aquifer materials was tested by laboratory column experiments. Five pesticides (mecoprop, dinoseb, atrazine, propachlor and 1,3-dichloropropene) and one degradation product of dichloropropene, chloroallylalcohol, were tested on three different aquifer materials. Retardation factors determined from the results ranged from 1 to 1.28, indicating the sorption was always very low. Calculated partition coefficient and K om-values ranged from 0 to 0.063 and 0 to 74, respectively. Mecoprop and chloroallylalcohol sorbed to non of the tested aquifer materials while dinoseb and dichloropropene to all the three tested aquifer materials sorbed. Sorption was much lower than found with batch experiments and only slightly lower than found with in situ experiments K om-values of aquifer materials determined by column experiments are in the same order of magnitude as found for topsoils. This indicates that values found for topsoils can be extrapolated to aquifer materials and that organic matter is the most important parameter for sorption of pesticides by soils. Column experiments and in situ experiments seem to be the best methods to study sorption on aquifer materials.
Sorption of pesticides by aquifer materials was tested by laboratory column experiments. Five pesticides (mecoprop, dinoseb, atrazine, propachlor and 1,3-dichloropropene) and one degradation product of dichloropropene, chloroallylalcohol, were tested on three different aquifer materials. Retardation factors determined from the results ranged from 1 to 1.28, indicating the sorption was always very low. Calculated partition coefficient and K om-values ranged from 0 to 0.063 and 0 to 74, respectively. Mecoprop and chloroallylalcohol sorbed to non of the tested aquifer materials while dinoseb and dichloropropene to all the three tested aquifer materials sorbed. Sorption was much lower than found with batch experiments and only slightly lower than found with in situ experiments K om-values of aquifer materials determined by column experiments are in the same order of magnitude as found for topsoils. This indicates that values found for topsoils can be extrapolated to aquifer materials and that organic matter is the most important parameter for sorption of pesticides by soils. Column experiments and in situ experiments seem to be the best methods to study sorption on aquifer materials.
Description
Publisher
Sponsors
(Commission of the European Communities
Directorate General for Science
Research and Development
Environmental Research Programme (Research Area: Soil Quality)) EG/DG12-Bodemkwaliteit
Directorate General for Science
Research and Development
Environmental Research Programme (Research Area: Soil Quality)) EG/DG12-Bodemkwaliteit