Ruzmetov U, Matekeyeva A, Smanova Z. HYBRID SPECTROSCOPIC STUDIES ON THE PRECONCENTRATION AND DETERMINATION OF HEAVY METAL IONS: SORPTION-ATOMIC ABSORPTION SPECTROSCOPY. «JOURNAL OF MODERN CHEMISTRY» [Internet]. 2025 Dec. 30 [cited 2026 Apr. 30];1(1). Available from: http://journals.nuu.uz/index.php/modernchemistry/article/view/10521