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Particle size distribution (A), Zeta potential (B), an optical micrographic image at 10 × 40 magnification (C), and scanning electron micrographs (D) of the as-prepared PMS. In vitro pretilachlor release curves of the prepared PMS incubated at acidic (pH = 4.0) conditions (E). Barnyard grass mortalities after treated with different concentrations of PMS for 14 days (F).
