Author:
Helling Charles S.,Kaufman Donald D.,Dieter Charles T.
Abstract
Movement of pesticides on soil thin-layer chromatographic (TLC) plates was detected by a bioassay employing a green alga,Chlorella sorokinianaShihira and Krauss. After leaching the soil TLC plates with water, aChlorellasuspension in an enriched agar medium was aspirated onto the soil to give ca. 8 × 106cells/cm2. Plates were incubated at 100% relative humidity at 30 C, with illumination of ca. 40 klux. Zones of pesticide movement were visible within 24 to 48 hr. Mobility in Hagerstown silty clay loam was assessed for two methylcarbamate insecticides and for nine phenylurea, 11s-triazine, and 13 miscellaneous herbicides. Among analogous triazines, the mobility order was: -OCH3> -Cl > -SCH3. Movement of 6,7-dihydrodipyrido[1,2-a:2′,1′-c]pyrazinediium ion (diquat) and 1,1′-dimethyl-4,4′-bipyridinium ion (paraquat), normally immobile in soils, was directly proportional to rate when applied in high doses.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Cited by
25 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. RELATIVE MOBILITY OF ATRAZINE, 2,4-D AND DICAMBA IN VOLCANIC SOILS OF SOUTH-CENTRAL CHILE 1;Soil Science;2002-05
2. Use of Multtresidue gas chromatographic analysis to determine pesticide mobility on soil TLC plates;Journal of Environmental Science and Health, Part B;1995
3. Effect of different saline, alkaline salts, fertilizers, and surfactants on the movement of some phosphorus-containing pesticides in soils;Ecotoxicology and Environmental Safety;1985-12
4. Mobility of Herbicides in Soil Columns Under Saturated- and Unsaturated-Flow Conditions;Weed Science;1982-11
5. Theoretical and experimental relationships between soil adsorption, octanol-water partition coefficients, water solubilities, bioconcentration factors, and the parachor;Journal of Agricultural and Food Chemistry;1981-09