PhD, chief specialist of the Ministry of Internal Affairs of the Republic of Uzbekistan, B. K. S.; DSc, Public Security University of the Republic of Uzbekistan, U. K. U.; Head of the Department of Analytical chemistry, faculty of chemistry National university of Uzbekistan, Doctor of chemical sciences, professor, U. Z. A. IMPROVEMENT OF THEIR PHYSICAL-CHEMICAL PROPERTIES BY IMMOBILIZING THE REAGENTS USED IN THE DETERMINATION OF ALUMINUM, LEAD, INDIUM AND GALLIUM IONS BY THE SOLIDPHASE LUMINESCENT METHOD: ЧАСТЬ 1 ТОМ 1 ИЮЛЬ 2023 год. Статья 2023, 1, 161-170.