Development of a hybrid sorption–spectroscopic system based on nitroso-n-salt immobilized on silk fibroin for the determination of Co(II) ions

MATEKEYEVA, Aziza, MUXAMMADIYEVA, Mehrinigor, SAITQULOVA, Visola, RUZMETOV, Uchqun

Ўзбекистон Миллий университети хабарлари · 2026-yil

Annotatsiya

In this study, a hybrid sorption–spectroscopic system based on Nitroso-N-salt immobilized on a silk fibroin matrix was developedfor the determination of Co(II) ions. The immobilization process was optimized by investigating the effects of pH, contact time,and reagent concentration on the analytical performance of the system. Spectrophotometric analysis showed that the maximumabsorption wavelength of Nitroso-N-salt was 368 nm, while the Co(II)–Nitroso-N-salt complex exhibited a maximum absorptionat 445 nm. The optimal immobilization pH ranged from 6.5 to 7.0. The immobilization efficiency reached 94%, whereas therecovery value was 99%. Raman spectroscopy and X-ray fluorescence (XRF) analyses confirmed the successful immobilization ofNitroso-N-salt on the silk fibroin matrix and the formation of a stable complex with Co(II) ions. The obtained results demonstratethat the proposed hybrid system is a promising analytical material for the selective and sensitive determination of Co(II) ions inaqueous media

Maqola ma’lumotlari
MualliflarMATEKEYEVA, Aziza, MUXAMMADIYEVA, Mehrinigor, SAITQULOVA, Visola, RUZMETOV, Uchqun
JurnalЎзбекистон Миллий университети хабарлари
NashriyotЎзбекистон Миллий университети
ISSN2181-7324, 3093-8996
Nashr sanasi2026-09-23
Jild3
Son3.3
Betlar327-330
TilIngliz
Ilmiy sohaKimyo
Indeksga qo‘shilgan2026-09-24

Maqolaning asl sahifasi

Kalit so‘zlar

immobilized reagent, sorption preconcentration, analytical signal, solid-phase analysis, water monitoring, environmental control., иммобилизованный реагент, сорбционное концентрирование, аналитический сигнал, твердофазный анализ, мониторинг водных объектов, экологический контроль., immobillangan reagent, sorbsion konsentrlash, analitik signal, qattiq fazali tahlil, suv monitoringi, ekologik nazorat

Ilmiy soha

Kimyo

Iqtibos keltirish

APAMATEKEYEVA, Aziza, MUXAMMADIYEVA, Mehrinigor, SAITQULOVA, Visola, & RUZMETOV, Uchqun (2026). DEVELOPMENT OF A HYBRID SORPTION–SPECTROSCOPIC SYSTEM BASED ON NITROSO-N-SALT IMMOBILIZED ON SILK FIBROIN FOR THE DETERMINATION OF Co(II) IONS. Ўзбекистон Миллий университети хабарлари, 3(3.3), 327-330. https://journals.nuu.uz/index.php/actanuuz/article/view/15019
GOST (OAK)MATEKEYEVA, Aziza va b. DEVELOPMENT OF A HYBRID SORPTION–SPECTROSCOPIC SYSTEM BASED ON NITROSO-N-SALT IMMOBILIZED ON SILK FIBROIN FOR THE DETERMINATION OF Co(II) IONS // Ўзбекистон Миллий университети хабарлари. – 2026. – T. 3, № 3.3. – P. 327-330.
MLAMATEKEYEVA, Aziza, MUXAMMADIYEVA, Mehrinigor, SAITQULOVA, Visola, and RUZMETOV, Uchqun. “DEVELOPMENT OF A HYBRID SORPTION–SPECTROSCOPIC SYSTEM BASED ON NITROSO-N-SALT IMMOBILIZED ON SILK FIBROIN FOR THE DETERMINATION OF Co(II) IONS.” Ўзбекистон Миллий университети хабарлари, 3(3.3), 327-330, 2026. https://journals.nuu.uz/index.php/actanuuz/article/view/15019
ChicagoMATEKEYEVA, Aziza, MUXAMMADIYEVA, Mehrinigor, SAITQULOVA, Visola, and RUZMETOV, Uchqun. “DEVELOPMENT OF A HYBRID SORPTION–SPECTROSCOPIC SYSTEM BASED ON NITROSO-N-SALT IMMOBILIZED ON SILK FIBROIN FOR THE DETERMINATION OF Co(II) IONS.” Ўзбекистон Миллий университети хабарлари, 3(3.3), 327-330 (2026). https://journals.nuu.uz/index.php/actanuuz/article/view/15019
HarvardMATEKEYEVA, Aziza, MUXAMMADIYEVA, Mehrinigor, SAITQULOVA, Visola, and RUZMETOV, Uchqun (2026) ‘DEVELOPMENT OF A HYBRID SORPTION–SPECTROSCOPIC SYSTEM BASED ON NITROSO-N-SALT IMMOBILIZED ON SILK FIBROIN FOR THE DETERMINATION OF Co(II) IONS’, Ўзбекистон Миллий университети хабарлари, 3(3.3), 327-330. https://journals.nuu.uz/index.php/actanuuz/article/view/15019
BibTeX
@article{matekeyevaaziza2026,
  title = {DEVELOPMENT OF A HYBRID SORPTION–SPECTROSCOPIC SYSTEM BASED ON NITROSO-N-SALT IMMOBILIZED ON SILK FIBROIN FOR THE DETERMINATION OF Co(II) IONS},
  author = {MATEKEYEVA, Aziza and MUXAMMADIYEVA, Mehrinigor and SAITQULOVA, Visola and RUZMETOV, Uchqun},
  journal = {Ўзбекистон Миллий университети хабарлари},
  year = {2026},
  volume = {3},
  number = {3.3},
  pages = {327-330},
  url = {https://journals.nuu.uz/index.php/actanuuz/article/view/15019}
}

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