ELMANFE, Galal; OMAR, Suad; EZNIEN, Ahmad. Determination of Nicotine in Libyan Smokers and Nonsmokers’ Urine Samples by Ultraviolet-Visible Spectrophotometry. Journal of Pure & Applied Sciences , [S. l.], v. 19, n. 5, p. 126–131, 2020. DOI: 10.51984/jopas.v19i5.826. Disponível em: https://www.sebhau.edu.ly/journal/jopas/article/view/826. Acesso em: 5 nov. 2026.