Güncel Gönderiler: Kimya Bölümü
Toplam kayıt 195, listelenen: 61-80
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Removal of basic dye using raw and acid activated bentonite samples
(ELSEVIER SCIENCE BV, 2009)The adsorption behavior of crystal violet (CV+) from aqueous solution onto raw (RB) and acid activated (AAB) bentonite samples was investigated as a function of parameters such as initial CV+ concentration, contact time ... -
Determination of fatty acids, vitamins and trace elements in Pistacia terebinthus coffee
(WFL PUBL, 2009)Composition of fatty acids, trace elements and fat-soluble vitamins of Pistacia terebinthus coffee, produced in Elazig,Turkey, was determined. Analyses were performed by using GC, ICP-OES and HPLC, respectively. The accuracy ... -
Synthesis and Modeling of Polysiloxane-Based Salt-in-Polymer Electrolytes with Various Additives
(AMER CHEMICAL SOC, 2009)The effect of both nanoparticles and low molecular weight borate esters on the ionic conductivity of crosslinked polysiloxanes was systematically investigated by means of measuring conductivity spectra in the impedance ... -
Determination of Trace Elements in Some Dried Winter Foods
(ASIAN JOURNAL OF CHEMISTRY, 2009)The levels of trace elements in nine food of winter which are grown in Elazig, Turkey were determined. Flame atomic absorption spectrometry (F-AAS) and high performance liquid chromatography (HPLC) were used in this work. ... -
Regioselective Synthesis of the 5,6-Dihydro-4H-furo[2,3-c]pyrrol-4-one Skeleton: A New Class of Compounds
(WILEY-BLACKWELL, 2010)We hereby report the first preparation of the 5,6-dihydro-4H-furo[2.3-c]pyrrol-4-one (3) and its derivatives starting from methyl 3-(methoxycarbonyl)furnan-2-acetate (8). The ester functionality connected to the methylene ... -
Electrochemıcal Behavıor Of Dısopyramıde And Its Adsorptıve Strıppıng Determınatıon In Pharmaceutıcal Dosage Forms And Bıologıcal Fluıds
(INST ORGANIC CHEM AND BIOCHEM, 2010)Electrochemical behavior of disopyramide (DPA) and optimum conditions to its quantitative determination were investigated using voltammetric methods. Some electrochemical parameters such as diffusion coefficient, surface ... -
Levels of Fat-Soluble Vitamins in Some Foods
(ASIAN JOURNAL OF CHEMISTRY, 2010)The levels of vitamins in nine food of winter season which are grown in Turkey were determined. High performance liquid chromatography (HPLC) was used in this work. Eight vitamins were detected in the foods. The contents ... -
Adsorption of basic dye from aqueous solutions by modified sepiolite: Equilibrium, kinetics and thermodynamics study
(ELSEVIER SCIENCE BV, 2010)The adsorption behavior of crystal violet (CV(+)) from aqueous solution onto a manganese oxide-coated (MCS) sepiolite sample was investigated as a function of parameters such as initial CV(+) concentration, contact time ... -
Different Reactivities of Alkoxy- and Thiocarbene Complexes of Fischer-Type: Formation of (N-Enamino)ethoxycarbene Complexes and Quinolines, Respectively
(AMER CHEMICAL SOC, 2010)Alkoxy- and thiocarbene complexes of chromium and tungsten afford different type of products on reaction with (N-aryl)imidoyl chlorides. The (n-butyl)ethoxycarbene complex [(OC)(5)W=C(OEt)n-Bu] and (N-aryl)imidoyl chlorides ... -
Enrichment and determination of Ni2+ ions in water samples with a diamino-4-(4-nitro-phenylazo)-1H-pyrazole (PDANP) by using FAAS
(ELSEVIER SCIENCE BV, 2010)Nickel, as a heavy metal, is toxic for many living species. Thus, the determination of trace amounts of nickel in environmental samples is of great importance. In the present study, new, sensitive, simple and validated ... -
Solid Phase Extraction Method for the Determination of Cobalt in Water Samples on Duolite XAD-761 Resin Using 4-(2-Pyridylazo) Resorcinol by FAAS
(BENTHAM SCIENCE PUBL LTD, 2010)A new solid-phase extraction method was developed for trace analysis of cobalt on Duolite XAD-761 resin by using flame atomic absorption spectrometry (FAAS). The optimum experimental conditions for the quantitative sorption ... -
Determination of Cymoxanil Fungicide in Commercial Formulation and Natural Water by Square-wave Stripping Voltammetry
(WILEY, 2010)Voltammetric behavior of cymoxanil fungicide dissolved in water-acetonitrile (1:1) solution was investigated by square-wave stripping voltammetry (SWSV) and cyclic voltammetry (CV). The cymoxanil was accumulated at -400 ... -
Separation and Preconcentration of Cobalt Using a New Schiff Base Derivative on Amberlite XAD-7
(WILEY-V C H VERLAG GMBH, 2010)In this study, a new solid-phase extraction procedure has been developed for preconcentration and determination of Co ions in different water samples by flame atomic absorption spectrometry (FAAS). Cobalt was preconcentrated ... -
Voltammetric Behavior of Telmisartan and Cathodic Adsorptive Stripping Voltammetric Method for Its Assay in Pharmaceutical Dosage Forms and Biological Fluids
(WILEY-V C H VERLAG GMBH, 2010)Electrochemical behavior of Telmisartan and optimum conditions for its assay were investigated by using cyclic voltammetry and square-wave voltammetry. All studies were based on the quasi-reversible and adsorption-controlled ... -
Electrochemical and Spectrophotometric Methods to Assay of Risperidone an Antipsychotic Drug in Pharmaceutical and Biological Samples
(ASIAN JOURNAL OF CHEMISTRY, 2010)The electrochemical behaviour of risperidone and its quantitative determination was investigated using voltammetric and spectrophotometric methods. The diffusion coefficient and number of transferred electrons were calculated ... -
Chromatographic Determination of Stabilizer in Nitrocellulose Based Propellants (A new extraction based chromatographic method for the determination of stabilizers in propellants)
(INST INDUSTRIAL ORGANIC CHEMISTRY, 2011)Regarding the chromatographic analysis of the stabilizers in the double based propellants, nitrocellulose causes an interference problem with diphenylamine and its derivatives. In this study, specific extraction of the ... -
Separation and solid phase extraction method for the determination of cadmium in environmental samples
(ELSEVIER SCIENCE BV, 2010)A solid phase extraction method was developed for the determination, preconcentration and separation of cadmium. The method is based on the adsorption of cadmium as 4-(2-pyridylazo) resorcinol (PAR) complex on Duolite ... -
A New Voltammetric Method for the Determination of Lercanidipine in Biological Samples
(SLOVENSKO KEMIJSKO DRUSTVO, 2011)Electrochemical behavior and adsorption-diffusion properties of lercanidipine (LCN) on a glassy carbon electrode (GCE) were investigated in a mixture of ethanol-Britton Robinson buffer (BR) using voltammetric methods. From ... -
Preparation of amidoximated poly(glycidyl methacrylate) microbeads
(JOHN WILEY & SONS LTD, 2011)Poly(glycidyl methacrylate) (PGMA) microbeads were synthesized by a simple suspension polymerization of glycidyl methacrylate and ethylene glycol dimethacrylate. The epoxy groups of the microbeads were firstly modified ... -
New Energetic Copper(II) Complexes With Pyrazolyl Type Ligands
(WILEY-V C H VERLAG GMBH, 2011)Nine Cu-II complexes (I-IX) containing the azide ion and bis-2,6-(pyrazol-1-yl)pyridine (pp), bis-2,6-(pyrazol-1-yl)pyridine (dmpp), and 2-(pyrazol-1-yl)-6-(3,5-dirnethylpyrazol-1-yl)pyridine (mpp), which are derivatives ...
