AHMED, MD. FAKRUDDIN ALI; LINGAPPA, Y.; GLORY, A. SPECTROPHOTOMETRIC DETERMINATION OF ARSENIC, LEAD IN ENVIRONMENTAL AND BIOLOGICAL SAMPLES USING 2, 5­THIOPHENE DICARBOXALDEHYDE, THIOSEMICARBAZONE. International Journal of Chemistry Research, [S. l.], v. 2, n. 3, p. 72–75, 2011. Disponível em: https://www.ijcr.info/index.php/journal/article/view/53. Acesso em: 8 sep. 2026.