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    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.
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    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.
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    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.
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    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.