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Published online 20 November 2006
Published in Vadose Zone J 5:1216-1221 (2006)
DOI: 10.2136/vzj2006.0037
© 2006 Soil Science Society of America
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Modeling Dynamic Sorption of Cadmium in Cropland Soils

Weiping Chen*, Andrew C. Chang, Laosheng Wu and Albert L. Page

Department of Environmental Sciences, Univ. of California, Riverside, CA 92521

Figure 1
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  		Fig. 1. Adsorption isotherms of Cd for the Holtville clay loam soil, equilibrated at 1:20 (w/v) for 48 h at an initial solution concentration ranging from 50 to 2000 µg Cd L–1.

 

Figure 2
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  		Fig. 2. Adsorption isotherms of Cd for the Arlington sandy loam, equilibrated at 1:20 (w/v) for 48 h at an initial solution concentration ranging from 50 to 2000 µg Cd L–1.

 

Figure 3
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  		Fig. 3. Cadmium adsorption: Retention in the mineral phase (MP) vs. initial solution concentration (C0), equilibrated at 1:20 (w/v) for 48 h.

 

Figure 4
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  		Fig. 4. Cadmium adsorption: Equilibrium concentration vs. initial solution concentration, equilibrated at 1:20 (w/v) for 48 h.

 

Figure 5
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  		Fig. 5. Cadmium solution concentration at different equilibration times for the Arlington sandy loam and Holtville clay loam, equilibrated at 1:20 (w/v) at initial concentration of 100 µg L–1.

 

Figure 6
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  		Fig. 6. Cadmium in the mineral phase of Arlington sandy loam and Holtville clay loam at different equilibration times, equilibrated 1:20 (w/v) at 100 µg L–1.

 

Figure 7
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  		Fig. 7. Cadmium in the adsorbed phase vs. the equilibrium concentration in Arlington sandy loam and Holtville clay loam, equilibrated at 1:20 (w/v) at 100 µg L–1.

 




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