2,4-D丁酯在土壤中的吸附与迁移
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摘要: 2,4-D丁酯(2,4-D butylate)是苯氧羧酸酯类选择性除草剂,有内吸传导作用,主要防除禾本科作物田中双子叶杂草.研究2,4-D丁酯在土壤中的吸附和移动性是评价其对土壤环境安全性的重要内容之一.关于2,4-D及其类似物的吸附、淋溶、水解和光解等环境行为研究有过一些报道,Richard G Z等[1]研究了2,4-D丁酯的水解特性,而关于2,4-D丁酯的土壤吸附和迁移研究目前尚未见报道.
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[1] Richard G Z, Wolfe N L, John A G, et al. Dynamics of 2,4-D esters in surface waters hydrolysis, photolysis, and vaporization[J] Environ Sci Technol, 1975, 9:1144-1150 [2] Giles C H, MacEwan T H, Nakhwa S N, et al. Studies in adsorption: part Ⅺ. A system of classification of solution adsorption isotherms, and its use in diagnosis of adsorptionmechanisms and inmeasure of specific surface areas of solids[J]. J Chem Soc, 1960,111 (10): 3973-3993 [3] Calvet R. Adsorption of organic chemicals in soil[J]. Environ Health Perspect, 1989, 83: 145-177 [4] 李界秋, 黎晓峰, 沈方科, 等. 毒死蜱在土壤中的环境行为研究[J].中国农学通报,2007,23(1):168-171 [5] Pionker H B, Glotfelty D E, Lucas A D. Pesticide contamination of groundwater in the mahatango greek watershed[J]. J Environ Qual, 1988,17(1):76-84 [6] Von Oepen B, Kordel W, Kleln W. Sorption of non-polar and polar compounds to soils: process,measurements and experience with the applicability of the modified OECD guidelines [J].Chemosphere, 1991, 22(2):285-304 -
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