Adsorption effects of three adsorbents on quinclorac and atrazine

Objective  To discover suitable adsorbents of quinclorac and atrazine and to reduce injury to crops caused by their residues.

Method  The methanol elutions of the adsorbents ( mixtures of soil and different adsorbents) containing quinclorac or atrazine were concentrated, and then analyzed by high-performance liquid chromatography.

Result  When each adsorbent was used alone, the adsorption rates of active charcoals with different particle sizes (F280, F380, F580) to quinclorac and atrazine were all above 80% indicating excellent adsorption effects. When the adsorbents were mixed with soil, the adsorption rates of F580 active charcoal to quinclorac and atrazine were 73.85% and 59.49%, respectively, indicating relatively good adsorption effects.

Conclusion  F580 active charcoal can absorb the residues of quinclorac and atrazine in water and soil, and it has great value for application and popularization.