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The fate of isoproturon in a freshwater microcosm with Lemna minor as a model organism

The fate of isoproturon in a freshwater microcosm with Lemna minor as a model organism

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BÖTTCHER, Thomas, Reiner SCHROLL, 2007. The fate of isoproturon in a freshwater microcosm with Lemna minor as a model organism. In: Chemosphere. 66(4), pp. 684-689. ISSN 0045-6535. eISSN 1879-1298

@article{Bottcher2007-01isopr-28450, title={The fate of isoproturon in a freshwater microcosm with Lemna minor as a model organism}, year={2007}, doi={10.1016/j.chemosphere.2006.07.087}, number={4}, volume={66}, issn={0045-6535}, journal={Chemosphere}, pages={684--689}, author={Böttcher, Thomas and Schroll, Reiner} }

Böttcher, Thomas 2014-07-18T08:28:01Z deposit-license Degradation, bioaccumulation and volatile loss of the <sup>14</sup>C-labeled phenylurea herbicide isoproturon (IPU) was examined in a freshwater microcosm with the free floating macrophyte species Lemna minor during a 21-day exposure time. Isoproturon volatilisation was very low with 0.13 ± 0.01% of the initially applied herbicide. Only a minor amount of the herbicide was completely metabolised, presumably by rhizosphere microorganisms and released as <sup>14</sup>CO<sub>2</sub>. In total, about 9% isoproturon was removed from the aquatic medium during 21 days. The major portion of the pesticide was removed by bioaccumulation of Lemna minor (5.0 ± 0.8%) and the bioconcentration factor (BCF) based on freshweight was 15.8 ± 0.2. However, this study indicated a high persistence of IPU in freshwater ecosystems and a potential hazard due to bioaccumulation in non-target species. The novel experimental system of this study, developed for easy use and multiple sampling abilities, enabled quantitatively studying the fate of isoproturon and showed high reproducibility with a mean average <sup>14</sup>C-recovery rate of 97.1 ± 0.7%. Böttcher, Thomas eng 2007-01 Chemosphere ; 66 (2007), 4. - S. 684-689 Schroll, Reiner The fate of isoproturon in a freshwater microcosm with Lemna minor as a model organism 2014-07-18T08:28:01Z Schroll, Reiner

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