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Soluble and Solid Organic Matter Effects on Atrazine Adsorption in Cultivated Soils

^a Inst. of Soils, Water, and Environmental Sci., ARO, Volcani Center, P.O.B. 6 Bet Dagan, Israel 50250
^b Univ. of California, Dep. of Soil and Environmental Sci., Riverside, CA 92521-0424

View larger version (20K): [in a new window]   Fig. 1. Adsorption isotherms of atrazine from artificial soil extract on soils with high (Soil H), medium (Soil M), and low (Soil L) organic matter contents. Bars indicate standard deviation.

View larger version (20K): [in a new window]   Fig. 2. Adsorption isotherms of atrazine in soils with high (Soil H), medium (Soil M), and low (Soil L) organic matter contents that were mixed with artificial soil extract (Extract A) and for each soil with its extract. Bars indicate standard deviation.

View larger version (15K): [in a new window]   Fig. 3. The Rd value as a function of Rom, the ratio between dissolved and solid organic matter contents for mixing of the various soils with the their extracts.

View larger version (13K): [in a new window]   Fig. 4. The Rd value as a function of Rom, the ratio between dissolved and solid organic matter contents, for mixing of the three studied soils with the various soil extracts. Soils L, M, and H represent low, medium, and high levels of organic matter content, respectively.