| Title: | Dissipation and metabolism of (14)C-spiroxamine in soil under laboratory condition |
| Author(s): | Sukul P; Zuhlke S; Lamshoft M; Rosales-Conrado N; Spiteller M; |
| Address: | "Institute of Environmental Research (INFU), TU Dortmund, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany. M.Spiteller@infu.uni-dortmund.de" |
| DOI: | 10.1016/j.envpol.2009.12.025 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "Spiroxamine [SPX] belongs to a spiroketalamine group of substances. The biodegradation of [1,3-dioxolane-4-(14)C]-SPX has been examined in 2 soils of different physicochemical properties. The total recovery of radioactivity from soils was 98.6-103.5% of that applied. The total amount of extractable radioactivity declined with a simultaneous increase in non-extractable radioactivity. Volatile organics were detected at lower levels; however, mineralization played a marked effect on the route of SPX dissipation. The half-life ranges between 37 and 44 d. SPX does not undergo any enantioselective degradation. 4 metabolites: despropyl-SPX, desethyl-SPX, SPX N-oxide and SPX acid were identified, applying mass spectrometric technique. Sorption-desorption data fitted well with a Freundlich model in log form (r(2), 0.99). K(Dsorp) ranged between 44 and 230, suggesting SPX ought to be considered as a substance with low leaching potential [groundwater ubiquity score (GUS), <1.8]. Furthermore, an overall low desorption of 1-11% indicates firm retention of SPX by the soils" |
| Keywords: | "Bacteria/metabolism Carbon Radioisotopes/analysis Fungicides, Industrial/*chemistry/*metabolism Half-Life Soil/analysis *Soil Microbiology Soil Pollutants/*chemistry/*metabolism Spiro Compounds/*chemistry/*metabolism;" |
| Notes: | "MedlineSukul, Premasis Zuhlke, Sebastian Lamshoft, Marc Rosales-Conrado, Noelia Spiteller, Michael eng England 2010/01/12 Environ Pollut. 2010 May; 158(5):1542-50. doi: 10.1016/j.envpol.2009.12.025. Epub 2010 Jan 8" |
