Properties of sulfometuron methyl affecting its environmental fate: aqueous hydrolysis and photolysis, mobility and adsorption on soils, and bioaccumulation potential
(phenyl-/sup 14/C)Sulfometuron methyl is stable in water at pH 7 or 9, but hydrolyzes readily (half-life 2 weeks) to (/sup 14/C)methyl 2-(aminosulfonyl) benzoate and (/sup 14/C)1,2-benzisothiazol-3-one, 2,3-dihydro 1,1-dioxide (saccharin), at pH 5.0. (/sup 14/C)Sulfometuron methyl was completely photolyzed to /sup 14/CO/sub 2/ under aquatic photolysis conditions. (/sup 14/C)Methyl benzoate was identified as an intermediate in this photolytic degradation. (/sup 14/C)Sulfometuron methyl was mobile on soils when tested using soil thin-layer plates and soil columns; this mobility agreed reasonably well with Freundlich soil isotherm constants. (/sup 14/C)-Sulfometuron methyl has a low partition ratio (0.31) between n-octanol and 0.01 M phosphate buffer, pH 7.0. It does not accumulate in fish tissue when fish are exposed to 0.01 ppm or 1.0 ppm (/sup 14/C)-sulfometuron methyl in their environment.
- Research Organization:
- E.I. du Pont de Nemours and Co., Inc., Wilmington, DE
- OSTI ID:
- 6899442
- Journal Information:
- J. Agric. Food Chem.; (United States), Journal Name: J. Agric. Food Chem.; (United States) Vol. 33:6; ISSN JAFCA
- Country of Publication:
- United States
- Language:
- English
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Terrestrial-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ADSORPTION
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL ACCUMULATION
CARBON 14 COMPOUNDS
CHEMICAL REACTIONS
DECOMPOSITION
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL TRANSPORT
FISHES
HERBICIDES
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
MASS TRANSFER
METABOLISM
PESTICIDES
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
SOILS
SORPTION
TRACER TECHNIQUES
VERTEBRATES