“Sol-Gel Hybrid Cyanopropyltriethoxysilane-Methyltrimethoxysilane As Adsorbent for Dispersive-Micro Solid Phase Extraction of Selected Organophosphorus Pesticides in Water Samples”. Jurnal Teknologi (Sciences & Engineering) 71, no. 5 (December 30, 2014). Accessed September 13, 2026. https://journals.utm.my/jurnalteknologi/article/view/3854.