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Öğe A Comparative Study for Separation, Preconcentration and Determination of Tartrazine (E 102) in Soft Drink Samples by Two Kinds of Amberlite Resins(SPRINGER, 2015) Bisgin, Abdullah Taner; Ucan, Mustafa; Narin, Ibrahim; Soylak, MustafaSeparation, preconcentration, and spectrophotometric determination of tartrazine (E 102) was performed by solid-phase extraction methods with using spectrophotometry. For this purpose, Amberlite XAD-1180 and Amberlite XAD-16 resins and mini-chromatographic column were used. All absorbance measurements of the dye were determined at 427 nm. Analytical parameters including pH, sample and eluent flow rates, eluent type, ionic strength, sample volume, and adsorption isotherms were investigated and optimized. Under optimum condition interference effect of main cations, some anions and widely used dyes were examined. Detection limits of the proposed methods were determined as 5.7 and 1.2 mu g L-1 for XAD-1180 and XAD-16 resins, respectively. Linear dynamic ranges of the methods were found between 0.4-30 and 0.4-12 mu g mL(-1) of tartrazine for XAD-1180 and XAD-16 resins, respectively. The preconcentration factors were found as 60 and 80 for XAD-1180 and XAD-16 columns, respectively. Relative standard deviations were lower than 7 % throughout all experiments for two methods. Developed methods were validated and checked with determination of tartrazine levels in soft drink samples by addition of analyte. The comparisons of the methods were performed by the analysis of tartrazine contents of food samples. Tartrazine concentrations, investigated solid samples, ranged between 146 and 391 mu g/g. Tartrazine content of liquid sample was found as 7.4 and 7.3 mu g/mL for X1180 and X16 methods, respectively. The results suggest that the methods are suitable for the determination of tartrazine. Very accurate results were obtained for spiked values of the tartrazine into the food samples. In addition to accuracy, the method is simple, environmental friendly, and economical for the determination of tartrazine level in food samples. In addition of analytical parameters, adsorption and isotherm studies were performed for two kinds of Amberlite resins. It was observed that the methods fitted the linear form of Freundlich isotherm model.Öğe Comparison of Column Solid-Phase Extraction Procedures for Spectrophotometric Determination of E129 (Allura Red) in Foodstuff, Pharmaceutical, and Energy Drink Samples(AOAC INT, 2015) Bisgin, Abdullah Taner; Ucan, Mustafa; Narin, IbrahimTwo novel spectrophotometric determination procedures based on retention of Allura Red onto Amberlite XAD-1180 and XAD-16 resins for its preconcentration, purification, and separation were developed. Analytical parameters of the methods including pH, eluent type, sample volume, and sample and eluent flow rates, were investigated and optimized. Interference effects of some cations, anions, and widely used food dyes were also investigated. Detection limits of the two methods were found to be 1.2 and 1.5 mu g/L for XAD-1180 and XAD-16 columns, respectively, under optimum conditions. Linear calibration curve ranges of the methods were 0.4-8.0 and 0.5-6.0 mu g/mL of Altura Red for XAD-1180 and XAD-16 resins, respectively. Preconcentration factors were found as 80 for both the XAD-1180 and XAD-16 columns using maximum sample volume and minimum eluent volume. RSDs of the methods were below 6% throughout all experiments. All absorbance measurements were performed at 506 nm. Validations of the methods were performed comparatively with determination of the Allura Red contents of some foodstuff, pharmaceutical, and energy drink samples. Allura Red concentrations in investigated solid and liquid samples ranged from 298 to 501 mu g/g and 53.8 to 508 mu g/mL, respectively. Satisfactory results were obtained from the real samples analysis. Allura Red contents of samples were determined to be highly similar using the two extraction methods. Comparisons of the methods were performed by analysis of Allura Red contents of the real samples. In addition to analytical parameters, adsorption isotherm studies were performed for the two kinds of Amberlite resins. It was observed that developed methods fit the linear form of the Freundlich adsorption isotherm model. All of the experimental results suggested that the developed SPE procedures are suitable for separation, preconcentration, and determination of Allura Red in solid and liquid matrixes.Öğe Comparison of preconcentration and determination methods of a textile dye by spectrophotometry: cloud point extraction and solid-phase extraction(DESALINATION PUBL, 2016) Surme, Yavuz; Bisgin, A. Taner; Ucan, Mustafa; Narin, IbrahimThis study deals with the preconcentration, determination, and removal of Lanaset Blue 2R textile dye from aqueous medium by two different methods. For this purpose, cloud point extraction (CPE) and solid phase extraction (SPE) methods were optimized. Amberlite XAD-1180 resin was used as adsorbent for SPE while Tergitol NP-7 non-ionic surfactant was used as surfactant rich phase for CPE. The common optimization steps were determined as initial solution pH, linear dynamic range, sample volume, equilibrium time and limits of detections were characterized for both SPE and CPE techniques while specific optimization steps such as temperature and surfactant concentration were also determined for CPE. The results showed that the CPE and SPE of dye were quantitative at pH 6. Detection limits were 21-gL(-1) for CPE and 9-gL(-1) for SPE. The enrichment factors were 40 and 10 for SPE and CPE, respectively. The real sample analysis was successfully performed with both techniques. The strengths and weaknesses of the methods were highlighted.Öğe Effect of the temperature and mobile phase composition on the retention behavior of nitroanilines on ligand-exchange stationary phase(ELSEVIER SCIENCE BV, 2006) Gurten, A. Ali; Ucan, Mustafa; Abdullah, Meysun I.; Ayar, AhmetThis paper deals with the separation of isomers of nitroaniline by liquid chromatography using the ligand-exchange technique. The chromatographic separations were performed on the ligand-exchanger sporopollenin. The sporopollenin used as support of stationary phase was modified with carboxylated-ethylenediamine matrix and was loaded with cobalt(II) ions. Using the column packed with cobalt(II) loaded carboxylated diaminoethyl sporopollenin [Co(II)-CDA-E-S], the retention behavior of 3- and 4-nitroanilines was investigated. The mobile phase used, was a mixture of 0.05 M NH4OH in ethanol-water. The resolution was strongly affected by the presence of ammonium hydroxide in the mobile phase and a concentration of 0.05 M was shown to be necessary for the separation of analytes. To study the effects of temperature on the resolution. column runs were also performed at various temperatures (15-60 degrees C). With increasing temperature. a decreased interaction between the solutes and the ligand-exchanger was observed. Consequently. the best results were obtained using a mixture of 0.05M NH4OH in ethanol-water (10:90. v/v) as the mobile phase at a column temperature of 35 degrees C. Ligand-exchange chromatography on the Co(II)-CDAE-S could be a useful alternative method for the separation of nitroaniline. (c) 2005 Elsevier B.V. All rights reserved.Öğe Micelle Mediated Extraction and Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Copper in Different Mushroom Species(Pleiades Publishing Inc, 2020) Camci, Yeliz; Bisgin, Abdullah Taner; Surme, Yavuz; Ucan, Mustafa; Narin, IbrahimA micelle mediated separation and preconcentration method for flame atomic absorption spectrophotometric (FAAS) determination of Cu was developed. The method is based on complex formation between Cu and 1-(2-pyridylazo)-2-naphthol and cloud point extraction with Tergitol NP-7 surfactant prior to FAAS determination. The parameters affecting quantitative extraction of copper, including pH, surfactant and ligand concentrations, incubation time and temperature, were examined and optimized. Under optimum conditions, interference effects of other ions were studied, and tolerance ratios of interference ions were given. Under the optimal conditions, detection and quantitation limits were found as 3 and 8 mu g/L, respectively. Linear dynamic range for Cu(2+)was determined to be 0.13-1.5 mu g/mL. Relative standard deviations were below 6% throughout the experiments. Enhancement factor was determined as 25. Applicability of the method was proved by analysis of standard reference materials. The developed method was applied to determine trace copper contents in different mushroom species.Öğe SIMULTANEOUS PRECONCENTRATION AND DETERMINATION OF Cu2+, Ni2+ AND Cd2+ BY MICELLE MEDIATED EXTRACTION IN FOOD AND WATER SAMPLES(SOC CHILENA QUIMICA, 2016) Bisgin, Abdullah Taner; Surme, Yavuz; Ucan, Mustafa; Narin, IbrahimAn effective extraction procedure based on the complexation of Cu2+, Cd2+, and Ni2+ with dithizone and extraction of these complexes by Tergitol NP-7 surfactant was developed. Micelle mediated extraction parameters such as pH, ligand and surfactant concentration, incubation time and temperature were investigated and optimized. Effects of external and internal interfering ions, linear dynamic range, detection and quantitation limits were examined and determined under optimal conditions. Detection limits were found as 0.5, 1.8 and 2.0 mg L-1 for Cu2+, Ni2+ and Cd2+, respectively. Linear dynamic range values were between 0.125-2, 0.125-2.5 and 0.05-1.4 mu g mL(-1) for Cu2+, Ni2+ and Cd2+ ions, respectively. Applicability, accuracy and precision of the method were checked with standard reference materials and real sample analyses by analyte addition technique. Finally, optimized method was applied to determine Cu2+, Ni2+ and Cd2+ contents of standard reference materials, mushrooms and water samples. Quantitative and accurate results were obtained from the analysis of standard reference materials and real samples.Öğe Simultaneous Preconcentration and Determination of Rhodamine B and Brilliant Blue(Springer Int Publ Ag, 2020) Bisgin, Abdullah Taner; Surme, Yavuz; Ucan, Mustafa; Narin, IbrahimA simultaneous solid-phase preconcentration and spectrophotometric determination method based on adsorption of rhodamine B (RB) and Brilliant Blue FCF (BB) synthetic dyes onto Chromosorb 108 resin was developed. Solution pH, sample, eluent flow rates and eluent type were optimized. RB and BB concentrations were determined at 556 and 630 nm, respectively. Matrix effects of interference components were examined. Preconcentration factors and detection limits of the dyes were calculated. Adsorption isotherms of method, surface micrographs and pH(zpc) of resin experiments were performed. Limit of detections of the method were determined 0.22 and 0.31 mu g L-1 for RB and BB, respectively. The method was successfully applied to determine RB and BB in industrial, foodstuff, cosmetics and environmental water samples. RB contents were found between 2.11 and 5.89 mu g mL(-1) for liquid samples and 17.55 and 370 mu g g(-1) for solid samples. BB concentrations in investigated solid samples were between 3.00 and 53.38 mu g g(-1). BB contents of liquid samples were determined between 1.57 and 9.66 mu g mL(-1). In order to test applicability of the method, analyte addition/recovery technique was also used. Quantitative recovery values ranging from 95 to 103% were obtained from the analyte addition/recovery tests.Öğe Simultaneous spectrophotometric determination and column solid-phase extraction of two Lanaset textile dyes in environmental water samples(ELSEVIER SCIENCE INC, 2016) Bisgin, Abdullah Taner; Surme, Yavuz; Ucan, Mustafa; Narin, IbrahimA solid-phase extraction method, based on the adsorption onto Diaion HP-20 resin, was developed for simultaneous spectrophotometric determination of Lanaset Blue 2R and Lanaset Yellow 28 dyes which are most together hazardous textile dyes in wastewater. Concentrations of the dyes were determined using UV-visible spectrophotometer at 625 and 438 nm for LB-2R and LY-28, respectively. The developed method was also applied to water samples. In dying process water, 572 +/- 15 mu g/mL and 396 +/- 6 mu g/mL of LB-2R and LY-28 dyes were determined. In addition, adsorption isotherms of the method, point of zero charge and surface micrographs of the resin were investigated. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.Öğe Ultrasound-enhanced dispersive solid phase extraction of Cd (II), Co (II), and Ni (II) using magnetic Pinus pinea(Elsevier, 2024) Surme, Yavuz; Yildirim, Gizem Kahve; Ucan, Mustafa; Narin, IbrahimA new ultrasound assisted dispersive solid phase extraction (DSPE) technique has been combined with flame atomic absorption spectrometry (FAAS) to enable the simultaneous preconcentration, determination and removal of cadmium, cobalt and nickel ions from aqueous samples. In this procedure, a magnetic Pinus pinea bioadsorbent was synthesized and used as bio-adsorbent. The parameters such as solution pH, ultrasound time, analyte concentration and interfering ions were successfully optimized. All three metal ions were extracted within a mere 120 s at pH 6 and the extraction recovery values of the all three analytes were quantitative (>95%) under the optimal conditions. The adsorption processes of the metal ions were analyzed and adsorption of the metal ions were identified by Energy Dispersive X-Ray Mapping technique. A certified reference material was analyzed for the accuracy of the method. Finally, the developed method was applied for preconcentration and determination of the analytes in real water samples including natural spring water, natural mineral water and factory process water.
