Adsorption Characteristics of Tribenuron-methyl in Main Soils of Henan Province
ZHANG Heli
LI Changbin
CUI Liwei
Abstract：To investigate the adsorption characteristics of tribenuron-methyl in four typical soils of Henan province(yellow brown soil,cinnamon soil,Shajiang black soil,tidal soil),the dynamics experiment was carried and the adsorption constant was determined using the batch equilibration technique. The results showed that the trends of adsorption dynamic in the four typical soils were fast at start and slow in the end. The maximum saturated adsorption capacity and adsorption constant were 32% and 2. 414 5 in yellow brown soil,the minimum in tidal soil were 21% and 0. 543 2. The relativity of adsorption constant to physical and chemical properties of the soil was as follows:organic content> clay content>pH value>cation exchange capacity. The adsorption of tribenuron-methyl in the four typical soils all fitted Freundich equation well,and the changes of free energy for adsorption were less than 40 kJ/mol,suggesting that the adsorption was physical reaction.
Keywords：tribenuron-methylsoil typeadsorptionorganic matter
Publication Date：2016-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 84-87 )