Selective and Simultaneous Solid Phase Extraction of Polar and Non–Polar Organophosphorus Pesticides Using Sol–Gel Hybrid Silica–Based Sorbent. Jurnal Teknologi, [S. l.], v. 62, n. 3, 2013. DOI: 10.11113/jt.v62.1893. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/1893.. Acesso em: 23 jul. 2024.