Ermatova A.A. et al. 2023. SORPTION-SPECTROSCOPIC DETERMINATION OF LEAD AND ZINC IONS USING IMMOBILIZED SULFARSAZENE AZOREAGENT. The American Journal of Interdisciplinary Innovations and Research. 5, 11 (Nov. 2023), 63–68. DOI:https://doi.org/10.37547/tajiir/Volume05Issue11-09.