Study of oil emulsion and oil dispersion properties of quaternary ammonium salts and their use as analytical reagents
نویسندگان
1 Academician Y.H. Mammadaliyev Institute of Petrochemical Processes of the Ministry of Science and Education of the Republic of Azerbaijan, AZ1025, Baku, 30 Khojaly ave.
2 Azerbaijan State Pedagogical University, AZ 1000, U. Hajibekova St.68, Baku, Azerbaijan
3 Azerbaijan State Pedagogical University, AZ 1000, U. Hajibekova St.68, Baku, Azerbaijan
doi
10.22034/crl.2025.534472.1656چکیده
ABSTRACT: The oil-collecting and oil-dispersing properties of a quaternary ammonium salt (QAS) formed by octadecane (8-DA) and cis-9-octadecenoic acid (8 -cis-9-DA) with triethanolamine (TEA) {triethanolammonium salt of 8-DA and triethanolammonium salt of 8 -cis-9-DA}, as well as its use as an analytical reagent for the extractionphotometric determination of nickel in the form of a mixed-ligand complex (MLC) with 2-hydroxy-5-chlorothiophenol (L) and QAS in water were studied. The maximum absorption of MLC Ni(II)-L-QAS is observed at λ = 500-510 nm (pHop. 3.5–5.9). The molar absorption coefficients range from (2.58-2.71)×10⁴. With single extraction using chloroform, 99.1–99.3% of nickel is extracted as MLC. Beer's law is followed within the range of 1.0–90 µg/mL of nickel. The methods we proposed were applied under already established optimal conditions for the determination of nickel in various objects: in wastewater and bottom sediments of metallurgical plants, in samples of natural soils, and also in samples of food products.
