Chemistry & Chemical Technology. – 2014. – Vol. 8, No. 2

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The scientific-technical journal

It is the scientific-technical journal in English in Ukraine discussing actual problems of chemistry and chemical technology. Compared with other chemical journals Ch&ChT is publishing materials of both theoretical and practical values in such fields as analytical, general organic, physical and inorganic chemistry; chemistry of high molecular compounds; materials science and engineering; chemical kinetics and catalysis; technology of inorganic substances; technology of organic synthesis products; chemical technology of processing of combustible minerals; processes and apparatus of chemical and food productions; biotechnology and ecology.

Chemistry & Chemical Technology : [the scientific-technical journal] / Lviv Polytechnic National University ; editor-in-chief M. Bratychak. – Lviv : Publishing House of Lviv Polytechnic National University, 2014. – Volume 8, number 2. – P. 117–242, I : ill.

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    Spectrophotometric determination of Ni2+, Co3+, Fe2+, Cu2+ concentrations with 1-(2-pyridylazo)-2-naphthol in aqueous-micellar medium based on two intensive parameters
    (Publishing House of Lviv Polytechnic National University, 2014) Drozd, Anatoliy; Leonova, Natalia
    Results comparison was performed within the terms of multi-component analysis for light absorption arrays processed using the method of consecutive separation of graduation surface (MCSGS), developed by the authors, with other methods of pseudo-onedimensional processing. Determination of Ni2+, Co3+, Fe2+, Cu2+ ion concentrations with 1-(2-pyridylazo)-2-naphthol in aqueous-micellar medium on two-dimensional absorption spectra of wave length by pH coordinates were performed. The results of calculation were compared with calculations by least squares method (LSM), partial least squares method (PLS) and principal component regression analysis (PCA). У межах багатокомпонентного аналізу проведено співставлення результатів оброблення масивів світ- лопоглинання методом почергового вписування градуювальної поверхні (МПВГП), розробленим авторами, з іншими методами псевдоодномірного оброблення. Проведено визначення Ni2+, Co3+, Fe2+, Cu2+ з 1-(2-піридилазо)-2-нафтолом у водно-міцелярному середовищі за двовимірними спектрами поглинання в координатах довжина хвилі – рН. Розрахунки порівняні з розрахунками за методом найменших квадратів (МНК), парціальних найменших квадратів (МПНК) і методу головних компонентів регресії (МГК).