Browsing by Author "Gurkan, Ramazan"
Now showing items 21-28 of 28
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Simple and fast spectrophotometric determination of low levels of thiabendazole residues in fruit and vegetables after pre-concentration with ionic liquid phase microextraction
Altunay, Nail; Uluzger, Dilay; Gurkan, Ramazan (TAYLOR & FRANCIS LTD, 2018)There is a great importance of monitoring thiabendazole (TBZ) residues in fruits and vegetables to ensure food safety. Therefore, a new ionic liquid (IL) phase microextraction method using IL, 1-butyl-3-methylimidazolium ... -
A Simple and Green Microextraction Procedure for Extraction of Morin in Food and Beverages Using Ionic Liquid
Altunay, Nail; Elik, Adil; Gurkan, Ramazan (SPRINGER, 2019)In this study, a practical and rapid microextraction procedure based on ionic liquid (IL) was proposed for the spectrophotometric determination of morin (2-(2,4-dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one) in foods and ... -
Simultaneous determination of antimony and boron in beverage and dairy products by flame atomic absorption spectrometry after separation and pre-concentration by cloud-point extraction
Altunay, Nail; Gurkan, Ramazan (TAYLOR & FRANCIS LTD, 2016)A new cloud-point extraction (CPE) method was developed for the pre-concentration and simultaneous determination of Sb(III) and B(III) by flame atomic absorption spectrometry (FAAS). The method was based on complexation ... -
Surfactant-sensitized spectrophotometric determination of Hg(II) in water samples using 2-(2-thiazolylazo)-p-cresol as ligand and cetylpyridinium chloride as cationic surfactant
Gurkan, Ramazan; Cepken, Tugba; Ulusoy, Halil Ibrahim (SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2012)A new, reliable, surfactant-sensitized method is described for the spectrophotometric determination of total and dissolved inorganic mercury at trace levels. The method is based on the ternary complex formation of Hg(II) ... -
Ultrasound assisted extraction and spectrophotometric determination of trace selenium in water, food and vegetable samples
Altunay, Nail; Gurkan, Ramazan; Gunes, Murat (ROYAL SOC CHEMISTRY, 2016)In the present study, a new ultrasound assisted extraction (UAE) method was developed for preconcentration of selenite, Se(IV), from sample matrices prior to analysis. The method is based on complex formation between ... -
Ultrasound-Assisted Low-Density Solvent-Based Dispersive Liquid-Liquid Microextraction Coupled to Spectrophotometry for the Determination of Low Levels of Histamine in Fish and Meat Products
Elik, Adil; Altunay, Nail; Gurkan, Ramazan (SPRINGER, 2019)In this study, a new low-density solvent-based dispersive liquid-liquid microextraction strategy coupled to spectrophotometry has been developed for the determination of the trace levels of histamine in fish and meat ... -
Vortex assisted-ionic liquid based dispersive liquid liquid microextraction of low levels of nickel and cobalt in chocolate-based samples and their determination by FAAS
Altunay, Nail; Elik, Adil; Gurkan, Ramazan (ELSEVIER SCIENCE BV, 2019)In the study, a simple and green vortex assisted-ionic liquid based dispersive liquid liquid microextraction (VA-IL-DLLM) combined with flame atomic absorption spectrometry (FAAS) was developed for the extraction and ... -
Vortex assisted-ionic liquid dispersive liquid-liquid microextraction and spectrophotometric determination of quercetin in tea, honey, fruit juice and wine samples after optimization based on response surface methodology
Altunay, Nail; Bingol, Deniz; Elik, Adil; Gurkan, Ramazan (PERGAMON-ELSEVIER SCIENCE LTD, 2019)The aim of our study is to develop a new vortex assisted-ionic liquid dispersive liquid-liquid microextraction (VA-IL-DLLM ) method for preconcentration and determination of the quercetin in tea, honey, fruit juice and ...