Fate of selected herbicides in a terrestrial laboratory microcosm

• Published in: Environmental science & technology Vol. 14; no. 9; pp. 1124 - 1128
• Main Authors: Gile, Jay D, Collins, James C, Gillett, James W
• Format: Journal Article
• Language: English
• Published: American Chemical Society 01.09.1980
• ISSN: 0013-936X; 1520-5851
• DOI: 10.1021/es60169a002

The transport and metabolism of carbon-14-labeled herbicides (simazine, bromacil, trifluralin, and 2,4,5-T) applied as foliar spray was investigated in a terrestrial microcosm chamber containing a synthetic soil medium, Douglas fir and red alder seedlings, rye grass, numerous invertebrates, and a gravid gray-tailed vole. There Chemicals were compared with a reference compound, the insecticide dieldrin. Total soil residues by 20 days post-treatment averaged 0.14 ppm for all Chemicals. Except for dieldrin, little extractable parent material was detected for any of the Chemicals in the soil. None of the Chemicals could be detected in the groundwater. Carbon-14 material of dieldrin was accumulated to a much greater extent than any of the herbicides in the invertebrates.