Sulfonic Acid-Functionalized Ordered Mesoporous Silica as a Dispersive Solid-Phase Extraction Adsorbent for the Determination of 30 Organophosphorus Pesticides

Key Points

• The aim is to evaluate a new adsorbent for effective extraction of organophosphorus pesticide residues.
• Utilized sulfonic acid-functionalized ordered mesoporous silica as an adsorbent.
• Conducted dispersive solid-phase extraction for detecting 30 organophosphorus pesticides.
• Analyzed pesticide residues using advanced chromatographic techniques.
• Achieved high extraction efficiency for all 30 tested organophosphorus pesticides.
• The method demonstrated a limit of detection lower than 0.01 mg/kg for several pesticides.
• Significant recovery rates above 90% with minimal interference from co-existing substances.