Fig. 6From: Removal and extraction efficiency of Quaternary ammonium herbicides paraquat (PQ) from aqueous solution by ketoenol–pyrazole receptor functionalized silica hybrid adsorbent (SiNPz)Pseudo-first order plots for the adsorption of paraquat by SiNPz (experimental conditions: 10 mL sample volume, 100 mg SiNPz, and paraquat concentration 20.0 mg L−1)Back to article page