USMONOVA, Z.; ABDURAHIMOV, A.; ABDULLAYEVA, F. INFRARED SPECTROSCOPIC ANALYSIS OF THE PURIFICATION OF SUNFLOWER OIL FROM WAXY SUBSTANCES USING PERLITE AND VERMICULITE. Scientific and Technical Journal of Namangan Institute of Engineering and Technology, [S. l.], v. 10, n. 3, p. 160–166, 2025. DOI: 10.61151/stjniet.v10i3.870. Disponível em: https://niet.uz/index.php/nj/article/view/870. Acesso em: 10 jun. 2026.