Effect of Different Particle-size Separates of Brown Soil on the Sorption and Desorption of Atrazine
A series of batch experiments were carried out to determine the adsorption and desorption of atrazine by brown soil different particle-size separates. The results showed that the rankings of the adsorption capacities (K_f) of atrazine by different particle-size separates of 5 - 10 μm≈2 - 5 μm≈<2 μm>10 - 50 μm>50 -250 μm, respectively. The values of K_f of different particle-size of brown soil had no significant correlation with the content of organic matter content and DCB extractable Fe and Al. It was possible that adsorption of atrazine was impacted by the component of organic matter,structural character and binding mode of organic matter and mineral. Hysteresis observed in different particle-size separates of brown soils, and all were positive hysteresis. It was the most obvious in 5 -10 μm particle-size.
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NSTL
万方数据
维普
