IMMOBILIZATION MECHANISM AND SPECTROSCOPIC ANALYSIS OF THE ORGANIC REAGENT ERIOCHROME BLACK T ON A FIBROIN SUPPORT
This article analyzes the optimal conditions for the immobilization of Eriochrome Black T salt onto fibroin fiber derived from local silk waste, its chemical bonding mechanism, and its characterization through IR analysis, diffuse reflectance spectroscopy, and absorption properties. It was...

Actual problems of Natural Sciences / 2025 / June

Samandarova Saribibi Farxodovna, Boltayeva Muhabbat Matnazarovna, Ashirov Mansur Allanazarovich, Smanova Zulayho Asanaliyevna

Volume 9 | Issue 6

ANALYSIS OF THE CHEMICAL COMPOSITION OF MONGOLIAN CISTANCHE - CISTANCHE MONGOLIKA (G. BECK)
Cistanche (Orobanchaceae) species are perennial parasitic plants, mainly distributed in arid and hot deserts. Cistanche plants are called “Desert ginseng”....

Actual problems of Natural Sciences / 2023 / February

Masharipov Shokir Ortiqovich, Khasanov Shodlik Bekpulatovich, Ashirov Mansur Allanazarovich

Volume 7 | Issue 2

3 February 2023, 21:50

DETERMINATION OF THE COMPLEX OF AMIDO BLACK 10B DYE WITH LEAD (II) ION ON IMMOBILIZED FIBER
This article presents a description of the method of obtaining a new acidic dye compound and sorption-spectroscopic detection of the metal ion in the immobilized fiber through the ligand complex of Pb (II) ion from heavy metals with an azo acid dye - Amido Black 10B. The properties of the ligand...

Actual problems of Natural Sciences / 2022 / August

Ashirov Mansur Allanazarovich, Yusupova Mavluda Rejabboyevna, Rakhimova Yulduz Maksudovna, Karimova Dildor Zaripovna

Volume 6 | Issue 8

SORPTION-PHOTOMETRIC DETERMINATION OF LEAD (II) IONS BY IMMOBILIZED SODIUM 4-AMINO-5-HYDROXY-3 - ((E) - (4- NITROPHENYL) DIAZENYL) - 6 - ((E) -PHENYLDIAZENYL) NAPHTHALENE-2,7-DISULFONATE
The article shows the possibility of using sodium 4-amino-5-hydroxy-3 - ((e) - (4-nitrophenyl) diazenyl) - 6 - ((e) -phenyldiazenyl) naphthalene2,7-isulfonate, immobilized on polyacrylonitrile fiber PPD, as a reagent for the determination of lead ions. The optimal conditions for immobilization and...

Actual problems of Natural Sciences / 2021 / June

Ashirov Mansur Allanazarovich, Smanova Zulaykho Asanalievna, Shakhidova Dilbar Nematovna

Volume 5 | Issue 11