37 sonuçlar
Arama Sonuçları
Listeleniyor 1 - 10 / 37
Öğe New drug loading systems: Using two component gelling strategy(Ankara Üniversitesi, 2015) Çolak, Mehmet; Evcil, Murat; Barış Cebe, Deniz; Hoşgören, HalilÖğe Effective adsorption of Co(II) ions from synthesized nano-adsorbent (Fe3O4/SiO2/Aptes/Pamam(G2)/Mu)(2019-05) Ekinci, Selma; İlter, ZülfiyeÖğe Kiral tetraamid jelatörleri(Erzurum Atatürk Üniversitesi, 2018-03) Aral, Tarık; Aral, Hayriye; Sünkür, Murat; Barış Cebe, DenizÖğe Syntheses of c2 symmetrical chiral tetraamides and their enantiomeric recognition ablity towards amino acide esthers(EJONS International Congress on Mathematics, Enginerimg and Natural Science, 2018-04) Aral, Tarık; Sünkür, Murat; Barış Cebe, Deniz; Aral, HayriyeÖğe İmin Temelli C2-simetrik bis(fosfinit)-Ru(II) kompleksinin sentezi ve asimetrik transfer hidrojenasyon reaksiyonlarındaki etkinliği(Burdur Mehmet Akif Ersoy Üniversitesi, 2017) Elma Karakaş, Duygu; Saleh, Najmuldain Abdullah; Sünkür, Murat; Baysal, Akın; Aydemir, Murat; Durap, FeyyazÖğe New schiff base ligand derived from 4-aminoantipyrine: Synthesis and spectroscopic characterization(Azərbaycan Dövlət Neft və Sənaye Universiteti, 2017) Dağ, Beşir; Yaşar, Fevzi; Çakmak, ReşitÖğe Application of pencil graphite electrode for voltammetric simultaneousdetermination of ascorbic acid, norepinephrine and uric acid in real samples(Batman Üniversitesi, 2018) Levent, Abdulkadir; Önal, GünayÖğe Synthesis and characterization of iron oxide nanoparticles modified with pamam dendrimer(Fırat Üniversitesi, 2018-06) Ekinci, Selma; İlter, Zülfiye; Çınar, ErcanÖğe Electroanalytical investigation of antineoplastic drug vinorelbine at pencil graphite electrode in surfactant media(Turkish Chemical Society, 2019) Önal, Günay; Levent, Abdulkadir; Şentürk, ZühreVinorelbine (sold under the brand name Navelbine), one of the semisynthetic derivatives of Vinca alkaloids, has been widely used either alone or in combination with other drugs in the tre- atment of leukemia, lymphoma, advanced testicular cancer and Kaposi's sarcoma. From the electrochemical point of view, only one study that was quite old has been reported on its voltammetric characteris- tics so far (Brett et al.). Keeping the above knowledge in mind, in the present study, a novel application of single-use pencil graphite (PG) electrode is introduced for the determination of Vinorelbine. The electrochemical oxidation of this compound was first investigated by cyclic voltammetry in aqueous solutions. Special attention was given to the use of adsorptive stripping vol- tammetry at a surface of PG electrode and glassy carbon (GC) one (for comparison purpose) in aqueous solutions over the pH range of 2.0-12.0 both without and with the addition of different charged surfactants. The sensitivity of the stripping voltammet- ric measurements was significantly improved when the anionic (sodium dodecylsulfate, SDS) and cationic (tetra-n-butylammo- nium bromide, TBAB) surfactants were present in the Vinorelbi- ne-containing electrolyte solution at pH 2.0-4.0 and pH 9.0-10.0, respectively, by using PG electrode. Using square-wave stripping mode, Vinorelbine yielded a well-defined voltammetric response in Britton-Robinson buffer pH 10.0 containing 3×10−3 M TBAB at +0.75 V (vs. Ag/AgCl) (after 120 s accumulation at +0.0 V). The process could be used to determine this compound in the concentration range of 2.3×10−8 – 5.8×10−6 M, with a detection limit of 7.5×10−9 M (base-5.8 ng mL1−). The proposed method was successfully applied to pharmaceutical formulations and the spiked human urine samples.Öğe Voltammetric behavior of acebutolol on a pencil graphite electrode: Highly sensitive determination in pharmaceuticals and human urine by square-wave voltammetry(Batman Üniversitesi, 2018) Levent, Abdulkadir
