Atrazine removal in Danish anaerobic aquifers

Philip Grinder Pedersen, N.P. Arildskov, Hans-Jørgen Albrechtsen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The pesticide atrazine (6-chloro-N-2-ethyl-N-4-isopropyl-1,3,5-triazine -2,4-diamine) was removed from the water phase in anaerobic laboratory batch incubations with sediment and groundwater from a number of Danish anaerobic aquifers, but not in incubations from aerobic aquifers. The removal process was abiotic since atrazine was also removed from microbially inhibited autoclaved and chloroform amended controls, although in controls amended with mercury, atrazine removal was slowed down. (ring-U-C-14)- atrazine amended samples showed no mineralization to (CO2)-C-14 or transformation to soluble degradation products, indicating that a slow sorption process was responsible for the atrazine removal. Approximately 20% of the applied C-14-atrazine was present in a non-extractable residual sediment bound fraction, indicating the slow sorption process to be in part irreversible. The irreversible sorption process may be important in terms of natural attenuation of atrazine in aquifers.
Original languageEnglish
Title of host publicationGroundwater Quality 2001 : Natural and Enhanced Restoration of Groundwater Pollution
EditorsS. Thornton, S. Oswald
Place of PublicationOxfordshire, UK
PublisherIAHS Press
Publication date2002
Pages187-191
Publication statusPublished - 2002
Event3rd International Conference on Groundwater Quality - University of Sheffield, Sheffield, United Kingdom
Duration: 18 Jun 200121 Jun 2001
Conference number: 3

Conference

Conference3rd International Conference on Groundwater Quality
Number3
LocationUniversity of Sheffield
CountryUnited Kingdom
CitySheffield
Period18/06/200121/06/2001
SeriesIAHS Publication
Number275

Keywords

  • atrazine
  • irreversible sorption
  • anaerobic

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