MATEKEYEVA A, MUXAMMADIYEVA M, SAITQULOVA V, RUZMETOV U. DEVELOPMENT OF A HYBRID SORPTION–SPECTROSCOPIC SYSTEM BASED ON NITROSO-N-SALT IMMOBILIZED ON SILK FIBROIN FOR THE DETERMINATION OF Co(II) IONS. NUUz [Internet]. 2026 Sep. 23 [cited 2026 Sep. 27];3(3.3):327-30. Available from: http://journals.nuu.uz/index.php/actanuuz/article/view/15019