Sol-Gel Hybrid Cyanopropyltriethoxysilane-methyltrimethoxysilane as Adsorbent for Dispersive-Micro Solid Phase Extraction of Selected Organophosphorus Pesticides in Water Samples. J. Teknol. [Internet]. 2014 Dec. 30 [cited 2026 Sep. 13];71(5). Available from: https://journals.utm.my/jurnalteknologi/article/view/3854