Fate of permethrin in model outdoor ponds
In 1979 and 1980, outdoor artificial ponds were treated with /sup 14/C-permethrin (labelled at either the cyclopropyl or methylene position) at 0.028 kg/ha (15 ug/L). Uptake of permethrin by duckweed and hydrosoil was monitored by direct combustion, TLC-autoradiography, HPLC, and liquid scintillation counting. Rapid loss of permethrin from the water coincided with the detection of five degradation products in the water at concentrations below 2.0 ug/L. The products were cis- and trans-cyclopropyl acid, phenoxybenzoic acid, and phenoxybenzyl alcohol, and an unknown non-cleaved product of permethrin. Permethrin was readily sorbed by duckweed but was not persistent. Permethrin residues in the hydrosoil, which was the major sink for permethrin added to the ponds, were persistent and were detected at 420 days post-treatment. Cis-permethrin was more persistent in the hydrosoil than the trans-permethrin. The results indicated that permethrin in water was short-lived at an application rate of 15 ug/L because of the rapid degradation of permethrin in the water and sorption of permethrin by the hydrosoil and vegetation. However, at one year post-treatment, permethrin residues were still detected in the hydrosoil at 1.0 ug/kg.
- Research Organization:
- Department of Soil Science, University of Manitoba, Winnipeg, Manitoba, Canada
- OSTI ID:
- 6144057
- Journal Information:
- J. Environ. Sci. Health, Part B; (United States), Journal Name: J. Environ. Sci. Health, Part B; (United States) Vol. 17:5; ISSN JPFCD
- Country of Publication:
- United States
- Language:
- English
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Aquatic-- Basic Studies-- Radiometric Techniques-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUATIC ECOSYSTEMS
AUTORADIOGRAPHY
CARBON 14 COMPOUNDS
ECOLOGICAL CONCENTRATION
ECOSYSTEMS
INSECTICIDES
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
PESTICIDES
PLANTS
PONDS
SURFACE WATERS
TRACER TECHNIQUES
UPTAKE