Gray relation analysis of atrazine adsorption onto surficial sediments and natural surficial coating samples
1.Research Academy of Energy and Environmental Studies, North China Electric Power University, Beijing 102206, China; 2.Key Laboratory of Regional Energy Systems Optimization of Ministry of Education, North China Electric Power University, Beijing 102206, China; 3.College of Environment and Resources, Jilin University, Changchun, Jilin 130012, China
Abstract：The main sites of atrazine (AT) adsorption onto the surficial sediments and natural surficial coating samples in Cd2+/AT, Cu2+/AT composite contamination systems were filtrated according to gray correlation of the active fractions of Fe oxides, Mn oxides, organic materials and their interactions. A multiple regression model between AT adsorption amount and main adsorption sites was established. The results show that Cd2+ expresses synergetic effect on AT adsorption with the most significant efficiency at Cd2+ level of 0.2 mg·L-1. The antagonistic effect caused by Cu2+ on AT adsorption is generally enhanced by the increasing of Cu2+ levels. Cd2+ or Cu2+ can dramatically influence active fractions and their interactions on AT adsorption.The interactions among active fractions play an important role in controlling the environmental behaviors of AT in aquatic environments.
2012, Vol. 33 
