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- W2097220814 endingPage "1975" @default.
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- W2097220814 abstract "The movement and degradation of [14C]-atrazine were studied in undisturbed soil columns (15 × 60 cm) taken manually from a field with no previous pesticide history. The experiment was conducted indoors under controlled temperature conditions. Three weeks after application of [14C]-atrazine (2.2 kg a.i. per hectare) to the soil surface, the columns were leached at weekly intervals for 12 weeks. Approximately 1.2% of the applied 14C was recovered in the leachate over the 12-week period, which corresponds to an atrazine (plus degradation products) concentration of 7.6 μg/L. On completion of the last leaching event, the columns were cut into 10-cm increments and analyzed for [14C]-atrazine and degradation products. Seventy-seven percent of the 14C applied to soil columns remained in the upper 10 cm and included primarily atrazine (9%) and soil-bound residues (57%). Deethylatrazine was the predominant degradation product in the top 10 cm (3.6%). Other degradation products were found in the top 10 cm at relative concentrations of deisopropylatra-zine > hydroxyatrazine > didealkylatrazine > deethylhydroxyatrazine > deisopropylhydroxyatra-zine. Uncharacterized polar metabolites in the top 10 cm accounted for 6% of the applied 14C. Atrazine, deethylatrazine, and deisopropylatrazine were found at all depths. In addition, didealkylatrazine was detected to the 50-cm depth, hydroxyatrazine to the 30-cm depth, and deethylhydroxyatrazine to the 20-cm depth." @default.
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- W2097220814 date "1993-11-01" @default.
- W2097220814 modified "2023-10-08" @default.
- W2097220814 title "Movement and degradation of [<sup>14</sup>C]atrazine in undisturbed soil columns" @default.
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- W2097220814 doi "https://doi.org/10.1002/etc.5620121103" @default.
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