2,4-Dichlorophenoxyacetic acid (2,4-D), is one of the most commonly herbicides used in agricultural farms to control weeds. Accumulation of 2,4-D in natural water stream constitutes a serious issue because of the adverse effects on human and animal health. This study aimed to monitor and treat 2,4-D in different water resources in Egypt. Treatment obtained by zinc ferrite nanoparticles (ZnFe2O4) w...