INVESTIGATION OF INTERACTION OF PHENYLTHIOUREA WITH MANGANESE (VII) AND CROMIUM (VI) AND DETERMINATION OF CROMIUM IN CROMIUM-CONTAINING ORE BY MEANS OF POTENTIOMETRIC TITRATION METHOD. Proceedings of the YSU B: Chemical and Biological Sciences, [S. l.], v. 44, n. 1 (221), p. 23–28, 2010. DOI: 10.46991/PYSUB.2010.44.1.023. Disponível em: https://journals.ysu.am/index.php/proceedings-chem-biol/article/view/vol44_no1_2010_pp023-028. Acesso em: 21 jan. 2026.