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Desorption Kinetics of Yttrium, Lanthanum, and Cerium from Soils

Bei Wen, Xiao-quan Shan*, Jin-ming Lin, Gui-gang Tang, Nai-bin Bai and Dong-an Yuan

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China



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  		Fig. 1. Lanthanum sorbed vs. desorption time by Haerbin soil (symbols {square} = experimental observations, lines = fits to Eq. [2]).

 


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  		Fig. 2. Lanthanum sorbed vs. desorption time by Haerbin soil (symbols {square} = experimental observations, lines = fits to Eq. [3]).

 


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  		Fig. 3. Effects of initial sorption period on desorption of Y from four investigated soils. ({square}) Yingtan soil, 1 wk; ({blacksquare}) Yingtan soil, 20 wk; ({triangleup}) Tongjiang soil, 1 wk; ({blacktriangleup}) Tongjiang soil, 20 wk; ({diamond}) Beijing soil, 1 wk; ({diamondsuit}) Beijing soil, 20 wk; ({circ}) Haerbin soil, 1 wk; (•) Haerbin soil, 20 wk.

 


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  		Fig. 4. Effects of initial sorption period on desorption of La from four investigated soils. ({square}) Yingtan soil, 1 wk; ({blacksquare}) Yingtan soil, 20 wk; ({triangleup}) Tongjiang soil, 1 wk; ({blacktriangleup}) Tongjiang soil, 20 wk; ({diamond}) Beijing soil, 1 wk; ({diamondsuit}) Beijing soil, 20 wk; ({circ}) Haerbin soil, 1 wk; (•) Haerbin soil, 20 wk.

 


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  		Fig. 5. Effects of initial sorption period on desorption of Ce from four investigated soils. ({square}) Yingtan soil, 1 wk; ({blacksquare}) Yingtan soil, 20 wk; ({triangleup}) Tongjiang soil, 1 wk; ({blacktriangleup}) Tongjiang soil, 20 wk; ({diamond}) Beijing soil, 1 wk; ({diamondsuit}) Beijing soil, 20 wk; ({circ}) Haerbin soil, 1 wk; (•) Haerbin soil, 20 wk.

 




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