DETERMINATION OF THE OPTIMAL CONDITIONS FOR THE SPECTROPHOTOMETRIC DETERMINATION OF Ni(II) IONS USING 7- BROMO-2-NITROSO-1-OXYNAPHTHALENE-3,6-DISULFOXIDE
Keywords:
Keywords: Ni(II) ion, 7-bromo-2-nitroso-1-oxynaphthalene-3,6-disulfoacid, organic analytical reagent.Abstract
Abstract. In this article, the spectrophotometric detection method of complexing
Ni(II) ion with 7-bromo-2-nitroso-1-oxynaphthalene-3,6-disulfoacid (BNOKS-S, S-
3,6) (HR) with organic analytical reagent developed and studied optimal conditions:
λ max = 640, pH = 6,5, universal buffer, reagent - buffer - Ni(II) - distilled water,
BNOKS-S with 0.05% relative to T Ni
2+ =10 μg/25ml, 1.0 ml of S-3.6 reagent was found
to be sufficient. The area of obedience to the Bouguer-Lambert-Behr law was
determined to be 1.0-17.5 μg/25 ml. Absorption spectra were studied: sensitivity
according to Sendel was 0.0011 μg/cm2, contrast ∆λ = 100 nm.
References
References
1. Nazirov Sh. S., Turaev Kh. Kh., Kasimov Sh. A., Normurodov B. A., Jumaeva Z.
E., Nomozov A. K., Alimnazarov B. Kh. Spectrophotometric determination of
copper (II) ion with 7-bromo-2-nitroso-1-oxinaphthalene-3, 6-disulphocid //Indian
Journal of Chemistry. – 2024. – Vol. 63. – P. 500-505.
https://doi.org/10.56042/ijc.v63i5.9289. №3. Scopus, CiteScore - 0.7.
2. Nazirov Sh.S., Turaev Kh.Kh., Kasimov Sh.A., Tillaev Kh. R, Alimnazarov B. Sh.,
Abdullaeva B.B. Spectrophotometric Determination of Ni(II) Ion with 7-Bromo-2-
Nitroso-1-Oxinaphthalene-3,6-Disulphocid //International Journal of Engineering
Trends and Technology. –2024. – Vol.72. –P. 57-63.
https://doi.org/10.14445/22315381/IJETT-V72I6P106 . №3. Scopus, CiteScore -
1.8.
3. Nazirov Sh.S., Turayev X.X. BNOKS-S,S-3,6 reagenti va uning Ni 2+ ioni bilan
hosil qilgan kompleks birikma tadqiqoti //O‘zbekiston Milliy universiteti xabarlari.
–2024. –T. 3/2/1. –C. 393-395. (02.00.00. №12).
4. Nazirov Sh.S., Turayev X.X., Turabov N.T. 7-brom-2-nitrozo-1-oksinaftalin-3,6-
disulfokislotasining analitik tavsiflari va uning mis(II) ioni bilan hosil qilgan
kompleks birikmasining spektroskopik tahlili //Kompozitsion materiallar. –2024. –
T.4.-C. 127-129. (02.00.00. №4).
5. Turayev X. X., Nazirov Sh. S. Cu 2+ ionining BNOKS-S,S-3,6 reagenti bilan hosil
qilgan kompleks birikmaning barqarorlik konstantasini babko usulida aniqlash//
Zamonaviy organik kimyo: yutuqlari, muommolari, yechimlari mavzusidagi xorijiy
olimlar ishtirokidagi Respublika ilmiy-amaliy anjumani. Toshkent–2024. –B. 116-
117.
6. Turayev X. X, Nazirov Sh. S. BNOKS-S,S-3,6 reagentining molyar nurni yutish
koeffitsienti va dissotsilanish konstantasini komar usuli yordamida aniqlash //
Zamonaviy organik kimyo: yutuqlari, muommolari, yechimlari mavzusidagi xorijiy
olimlar ishtirokidagi Respublika ilmiy-amaliy anjumani. Toshkent–2024. –B. 118-
119.
7. Turayev X. X., Nazirov Sh. S. Cu 2+ ionining BNOKS-S,S-3,6 bilan hosil qilgan
kompleks birikmaning haqiqiy molyar so‘ndirish koeffitsientini aniqlash //
Zamonaviy organik kimyo: yutuqlari, muommolari, yechimlari mavzusidagi xorijiy
olimlar ishtirokidagi Respublika ilmiy-amaliy anjumani. Toshkent–2024. –B. 119-
120.
8. Turayev X. X., Nazirov Sh. S. Mis(II) ionini aniqlashning kichik kvadratlar usuli
yordamida darajalangan grafik tenglamasini hisoblash // Роль коллоидной химии
в сфере нефтегазопереработки, химической технологии и экологии
материалы I-Международной научно-технической конференции,
посвященной 110-летию со дня рождения академика К.С. Ахмедова. Ташкент
–2024. –C. 444-447.
9. Turayev X. X., Nazirov Sh. S. Ni 2+ ionining BNOKS-S,S-3,6 bilan hosil qilgan
kompleks birikmaning haqiqiy molyar so‘ndirish koeffitsientini // Роль
коллоидной химии в сфере нефтегазопереработки, химической технологии и
экологии материалы I-Международной научно-технической конференции,
посвященной 110-летию со дня рождения академика К.С. Ахмедова. Ташкент
–2024. –C. 447-449.
10. Turayev X. X., Nazirov Sh. S. Cu 2+ ionining BNOKS-S,S-3,6 reagenti bilan hosil
qilgan kompleks birikmaning spektral tavsifi // «Bioorganik kimyo fani
muammolari» (Akademik O.S.Sodiqovning 111 yilligi hamda professor
Sh.V.Abdullayevning 80 yoshlik yubileyiga bag‘ishlangan) XI Respublika yosh
kimyogarlar ilmiy-amaliy konferensiya materiallari to‘plami. Toshkent–2024. –
T.1. –B. 119-120.
11. Nazirov Sh.S., Turayev X.X., Turabov N.T., Todjiyev J.N. Ni(II) ionining BNOKS-
S,S-3,6 reagenti bilan hosil qilgan kompleks birikmaning barqarorlik konstantasini
Babko usulida aniqlash// The 4th International Conference on “Energy-Earth-
Environment-Engineering”. Toshkent–2024. –T.1. –B. 48.
12. Turayev X., Nazirov S. Ni (II) BNOKS-S, S-3, 6 reagenti bilan hosil qilgan
kompleks birikmaning spektral kontrasligi va analitik sezgirligi //Journal of
universal science research. – 2025. – Т. 3. – №. 5. – С. 268-270.
13. Nurmukhammat, Turabov, et al. "Development of spectrophotometry methods for
the determination of copper (II) Ions by new azo reagent based on Pyridine." Asian
journal of multidimensional research 10.4 (2021): 106-113.
14. Turayev X., Nazirov S. Nikel(II) ionini aniqlashning kichik kvadratlar usuli
yordamida darajalangan grafik tenglamasini hisoblash // "Scientific Exploration and
Research and international scientific journal". – 2025. –Vol. 13. – No. 12. –P. 948-
953.
