Abou-Assaf

Dick WA, RO Ankumah, G McClung, N Abou-Assaf (1990) Enhanced degradation of S-ethyl A, A -dipropyl-carbamothioate in soil and by an isolated soil microorganism. In Enhanced Bio degradation of Pesticides in the Environment (Eds KD Racke and JR Coats), pp 98-112. American Chemical Society Symposium Series 426, American Chemical Society, Washington, DC. 

CASRN 25311-71-1 molecular formula C15H24NO4PS FW 345.40 Soil. Rapidly degraded by microbes via oxidative desulfuration in soils forming isofenphos oxon (Abou-Assaf et al, 1986 Abou-Assaf and Coats, 1987 Somasundaram et al., 1989), isopropyl salicylate, and carbon dioxide (Somasundaram et al., 1989). The formation of isofenphos oxon is largely dependent upon the pH, moisture, and temperature of the soil. The degradation rate of isofenphos decreased with a decrease in temperature (35 °C >25 °C >15 °C), moisture content (22.5% >30% >15%), and in acidic and alkaline soils (pH 6 and 8). After isofenphos was applied to soil at a rate of 1.12 kg ai/ha, concentrations of 8.3, 7.2, 5.1, and 1.0 ppm were found after 5, 21, 43, and 69 d, respectively. Following a second application, 4.9, 1.55, 0.25, and 0.10 ppm of isofenphos were found after 5, 21, 43, and 69 d, respectively (Abou-Assaf and Coats, 1987). 

Abou-Assaf, N. and Coats, J.R. Coats. Degradation of [ Cjisofenphos in soil in the laboratory under different soil pH s, temperatures, and moistures. J. Environ. Sci. Health, B22(3) 285-301, 1987. 

Abou-Assaf, N., Coats, J.R., Gray, M.E., and Tollefson, J.J. Degradation of isofenphos in cornfields with conservation tillage practices,/. Environ. Sci. Health, B21(6) 425-446, 1986. 

Dick, W.A., Ankumah, R.O., McCltmg, G, and Abou-Assaf, N. Etrhanced degradation of 5-ethyl A,lV-dipropylcarbamothioate in soil and by an isolated soil nricroorganism in Enhanced Biodegradation of Pesticides in the Environment ACS Symposium Series 426, Racke, K.D. and Coats, J.R., Eds. (Washington, DC American Chenrical Society, 1990), pp. 98-112. 

Dick, W. A. Ankumah, R. 0. McClung, G. Abou-Assaf, N. This volume. 

Abou-Krisha MM, Assaf EH, El-Naby SA (2009) J Solid State Electrochem 13 879-885... 

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