Yazar "Güray, Tufan" için listeleme
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2,2 ',3,4-Tetrahydroxy-3 '-sulpho-5 '-nitroazobenzene for spectrophotometric determination of aluminium in pharmaceutical suspensions and granite
Güray, Tufan; Uysal, Uluk Dilek; Gedikbey, T; Hüseyinli, AA (Elsevier Science BV, 2005)A selective and sensitive new spectrophotometric method has been developed for the determination of aluminium.2,2',3,4-Tetrahydroxyy-3'-sulpho-5'-nitroaobenzene (tetrahydroxyazon SN) formed an orange chelate with aluminium ... -
Determination of Zearalenone By the Capillary Zone Electrophoresis-Uv Detection and Its Application to Poultry Feed and Cereals
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek; Öncü-Kaya, Elif Mine (Taylor & Francis Inc, 2013)A capillary zone electrophoretic method for the determination of zearalenone is described in this study. In the separation, a run buffer consisting of 20mM sodium tetraborate at pH 9.0 with 15% acetonitrile applying 15kV, ... -
HPLC fluorescence determination of ochratoxin A utilizing a double internal standard and its application to poultry feed
Tunçel, Muzaffer; Öncü Kaya, Elif Mine; Uysal, Ülkü Dilek; Güray, Tufan (Scientific Technical Research Council Turkey-Tubitak, 2015)A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. The ... -
HPLC fluorescence determination of ochratoxin A utilizing a double internal standard and its application to poultry feed
Abstract: A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. ... -
A Rapid Determination of Patulin Using Capillary Zone Electrophoresis and its Application to Analysis of Apple Juices
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek (Oxford University Press Inc, 2013)This study describes a capillary zone electrophoretic method for the determination of patulin. An optimum run buffer was found to be 25 mM of sodium tetraborate and 10% acetonitrile (v/v) at pH 10. Optimum conditions were ... -
Rapid direct spectrophotometric determination of zirconium(IV) in alloys with 2,2 ',3,4-tetrahydroxy-3 '-sulpho-5 '-carboxyazobenzene reagent
Uysal, Ülkü Dilek; Hüseyinli, A. Ali; Güray, Tufan (Natl Inst Science Communication-Niscair, 2011)In this study, 2, 2, 3, 4-tetrahydroxy-3'-sulpho-5'-carboxyazobenzene (tetrahydroxyazon SC) has been synthesized for the first time and used for direct spectrophotometric determination of zirconium(IV). Tetrahydroxyazon ... -
Rapid direct spectrophotometric determination of zirconium(IV) in alloys with 2,2/,3,4-tetrahydroxy-3/-sulpho-5/-carboxyazobenzene reagent
In this study, 2, 2', 3, 4-tetrahydroxy-3'-sulpho-5'-carboxyazobenzene (tetrahydroxyazon SC) has been synthesized for the first time and used for direct spectrophotometric determination of zirconium(IV). Tetrahydroxyazon ... -
A validated capillary electrophoretic method for the determination of indacaterol and its application to a pharmaceutical preparation
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek (Food & Drug Adminstration, 2018)Indacaterol is a new inhaled ultra-long acting beta(2)-agonist. It has been recently approved in the European Union for the treatment of chronic obstructive pulmonary disease. This paper reports, for the first time, a ... -
A Validated Capillary Electrophoretic Method for the Determination of Olopatadine and Its Application to a Pharmaceutical Preparation of Eye Drops
Güray, Tufan; Turan, Tuğba; Tunçel, Muzaffer; Uysal, Ülkü Dilek (Aoac Int, 2017)A validated rapid and sensitive capillary zone electrophoretic method for the determination of olopatadine hydrochloride (OLO) is described. Optimum conditions were found: 20 mmol/L sodium tetraborate buffer, acetonitrile ... -
Validated UV-Vis Spectrophotometric Method for the Determination of Copper using 2,3,4,6 '-Tetrahydroxy-3 '-Sulfoazobenzene in Real Samples
Güray, Tufan; Uysal, Uluk Dilek (Chem Soc Pakistan, 2018)A selective and sensitive spectrophotometric method has been proposed for the determination of copper by forming red-brown chelate at pH 3.5 (3-4) with 2,3,4,6'-tetrahydroxy-3' sulfoazobenzene (THSA). Molar absorptivity ... -
Validated UV-Vis Spectrophotometric Method for the Determination of Copper using 2,3,4,6/-Tetrahydroxy-3/-Sulfoazobenzene in Real Samples
Güray, Tufan; Uysal, Uluk Dilek (Chemical Society of Pakistan, 2018)A selective and sensitive spectrophotometric method has been proposed for the determination of copper by forming red-brown chelate at pH 3.5 (3-4) with 2,3,4,6/-tetrahydroxy-3/-sulfoazobenzene (THSA). Molar absorptivity ...
