Siberian Federal University 
- Issue
- Journal of Siberian Federal University. Chemistry. 2026 19 (2)
- Authors
- Zalov, Ali Z.; Huseynova, Afet T.; Huseynova, Nazile S.; Shirinov, Elman G.; Ibragimova, Shahla A.
- Contact information
- Zalov, Ali Z. : Azerbaijan State Pedagogical University (Baku, Azerbaijan); ; Huseynova, Afet T. : Baku State University (Baku, Azerbaijan); Huseynova, Nazile S.: Azerbaijan Medical University (Baku, Azerbaijan); Shirinov, Elman G. : Mingachevir State University (Mingachevir, Azerbaijan); Ibragimova, Shahla A.: Azerbaijan State Academy of Physical Culture and Sport (Baku, Azerbaijan)
- Keywords
- nickel; 1-(5-chloro-2-pyridylazo)-2-hydroxy-4-mercaptophenol; 1-(5-bromo-2-pyridylazo)-2-hydroxy-4-mercaptophenol; 2,9-dimethyl-1,10-phenanthroline; chloroform
- Abstract
The reactions of Ni(II) with halogenated azomercaptophenols {1-(5-Chloro- or 5-Bromo-2- Pyridylazo)-2-Hydroxy-4-Mercaptophenol} and 2,9-dimethyl-1,10-phenanthroline (Neocuproine) were studied by the extraction–photometric method. After a single extraction with chloroform at an aqueous- to-organic phase ratio of 4:1, 98.4–98.7 % of nickel is extracted in the form of a mixed-ligand complex. The optimum acidity range is pH 4.8–6.5, and the absorption maxima are observed at 582 and 596 nm, with molar absorption coefficients ε = (3.3–3.5)×10⁴. The Beer law is obeyed in the concentration range of 0.18–22 μg mL⁻¹ Ni(II). The developed extraction-photometric method was used to determine nickel in wastewater, oil samples and oil products
- Pages
- 404–417
- EDN
- JXGUMG
- Paper at repository of SibFU
- https://elib.sfu-kras.ru/handle/2311/158634
Journal of Siberian Federal University. Chemistry / Extraction–Spectrophotometric Determination of Nickel(II) Using Mixed-Ligand Complexes of 1-(5-Chloro- or 5-Bromo-2-Pyridylazo)- 2-Hydroxy-4-Mercaptophenol and 2,9-Dimethyl-1,10-Phenanthroline
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