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Öğe A NEW CLOUD POINT EXTRACTION PROCEDURE FOR DETERMINATION OF TRACE AMOUNT CRYSTAL VIOLET IN WASTEWATER BY UV-VIS. SPECTROMETRY(SCIBULCOM LTD, 2015) Bisgin, A. T.; Narin, I.; Ucan, M.; Soylak, M.A new cloud point extraction procedure was developed as surfactant using mixed micelles of Tween-80 and Tergitol TMN-6 for separation and preconcentration of crystal violet in aqueous media. To determine the optimum conditions, the effects of analytical parameters such as pH, mixed ratio of surfactants, amount of mixed surfactants, the equilibrium temperature and time, centrifugation time and rates, and matrix effect of some ions were studied. Linear calibration curve (range from 2 to 400 ng ml(-1)) was obtained after applying developed cloud point extraction procedure. Crystal violet content of some waste water and lake water samples was determined after using developed method by UV-vis. spectrometry at 600 nm.Öğe A new cloud point extraction procedure for determination of trace amount crystal violet in wastewater by UV-VIS. Spectrometry(Scibulcom Ltd., 2015) Bisgin, A.T.; Narin, I.; Ucan, M.; Soylak, M.A new cloud point extraction procedure was developed as surfactant using mixed micelles of Tween-80 and Tergitol TMN-6 for separation and preconcentration of crystal violet in aqueous media. To determine the optimum conditions, the effects of analytical parameters such as pH, mixed ratio of surfactants, amount of mixed surfactants, the equilibrium temperature and time, centrifugation time and rates, and matrix effect of some ions were studied. Linear calibration curve (range from 2 to 400 ng ml–1) was obtained after applying developed cloud point extraction procedure. Crystal violet content of some waste water and lake water samples was determined after using developed method by UV-vis. spectrometry at 600 nm. © 2015, Scibulcom Ltd. All rights reserved.Öğe Cloud Point Extraction and Flame Atomic Absorption Spectrometric Determination of Cd(II) in Industrial and Environmental Samples(Maik Nauka/Interperiodica/Springer, 2018) Surme, Y.; Bisgin, A. T.; Ucan, M.; Narin, I.A micelle-mediated separation/preconcentration technique was used for the determination of trace Cd(II) in solid and liquid samples by flame atomic absorption spectrometry. Cadmium ions reacted with ammonium pyrrolidine dithiocarbamate to form a chelate that was extracted from aqueous medium by a non-ionic surfactant Tergitol NP-7 at pH 7. Values of pH, concentrations of ammonium pyrrolidine dithiocarbamate and Tergitol NP-7, temperature, incubation time, sample volume and matrix ions were optimized. The enrichment factor of the method was found to be 25, and the detection and quantitation limits were 1.5 and 3.8 mu g/L, respectively. Assessment of the method was performed with a certified reference material, and the observed concentration of Cd(II) was in good agreement with the certified value. The method was also applied to the determination of Cd(II) in waters and industrial samples. Cd(II) concentrations in two industrial ZnO composite samples were determined between 59 and 69 mu g/g.Öğe Separation, Preconcentration and Spectrophotometric Determination of Rhodamine B in Industrial, Cosmetic and Water Samples by Cloud Point and Solid Phase Extraction(Maik Nauka/Interperiodica/Springer, 2018) Bisgin, A. T.; Surme, Y.; Ucan, M.; Narin, I.The aim of this study is extraction, preconcentration and spectrophotometric determination of Rhodamine B (RB) in aqueous media by developing solid phase extraction (SPE) and cloud point extraction (CPE) methods. Amberlite XAD-1180 adsorbent and Tergitol NP-7 surfactant were used for SPE and CPE, respectively. Parameters of SPE and CPE which effected quantitative extractions were investigated and optimized. Matrix effects of some ions and dyes were analyzed at the optimum conditions. Developed methods were used to determine RB contents of anti-freeze, lipstick and water samples. The results of both methods demonstrated that the RB was quantitatively extracted and determined. RB contents of solid samples were found between 473 +/- 15 and 317 +/- 8 mu g/g; 472 +/- 11 and 312 +/- 6 mu g/L dye contents were determined for liquid samples. The methods were tested by analysis of spiked samples. Analytical characteristics of the methods were compared with each other and previously reported studies.Öğe Synthesis and Characterization of Some Metal Complexes of Isonitroso-2-acetylnaphthalene Derivative(MAIK NAUKA/INTERPERIODICA/SPRINGER, 2016) Ucan, S. Y.; Ucan, M.; Demir, I.Nickel(II), copper(II), and zinc(II) complexes with the Schiff base obtained from isonitroso-2-acetylnaphthalene and 1,2-phenylenediamine were synthesized. The compounds were characterized by elemental analyses, FT-IR, UV-Vis, and H-1 and C-13 NMR spectra, conductance measurements, magnetic susceptibility measurements, and thermal analysis. The results suggest tetradentate coordination of the symmetrical Schiff base ligand through the two oxime oxygen atoms and two azomethine nitrogen atoms. The molar conductance data showed that the synthesized complexes are non-electrolytes.Öğe Synthesis and characterization of some vic-dioxime and its mononuclear complexes(MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007) Uysal, S.; Coskun, A.; Koc, Z. E.; Ucan, M.; Ucan, H. I.In this study, acetophenone is used as a basis substance. omega-Isonitrosoacetophenone has been synthesized from nitrosyl with amyl nitrite of acetophenone in the presence of sodium ethoxide. Subsequently, anti-phenylglyoxime has been prepared by reacting omega-isonitrosoacetophenone with hydroxylamine and sodium acetate in a ethanolic media. Chlorophenylglyoxime has been obtained from reaction with chlorine gases. Then, three aminophenylglyoxime (ligands) have been prepared by the reaction of chlorophenylglyoxime and the corresponding amines. The Ni(II), Co(II), and Cu(II) complexes with BF2+-bridge of anilinophenylglyoxime and 2,4-dimethylanilinophenylglyoxime were prepared. Then polymeric metal complexes with BF2+-bridge of dopamiophenylglyoxime were prepared. Their structures were identified by FT-IR, H-1 NMR, and ICP-AES spectral data, elemental analysis and magnetic measurements.Öğe Synthesis and characterization of some vic-dioxime and its mononuclear complexes (vol 33, pg 351, 2007)(MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007) Uysal, S.; Coskun, A.; Koc, Z. E.; Ucan, M.; Ucan, H. I.[Abstract Not Available]
