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YALIN CAMSI KARBON ELEKTROT KULLANARAK FARMASÖTİK FORMULASYON VE İNSAN İDRARINDAN KORTİZOLÜN HIZLI KARE DALGA VOLTAMETRİK ANALİZİ
2019
Journal:  
Konya Mühendislik Bilimleri Dergisi
Author:  
Abstract:

Ticari ilaçlardan ve insan idrarından kortizolün direkt tayini için basit, hızlı ve duyarlı bir elektrokimyasal yöntem geliştirildi. Kortizolün elektrokimyasal indirgenmesi ve nicel analizleri, dönüşümlü voltametri (DV) ve kare dalga voltametrisi (KDV) kullanılarak yalın camsı karbon elektrot (CKE) ile Britton-Robinson tampon çözeltisinde (BRTÇ) ve pH 2,0’de gerçekleştirildi. Kortizol DV’de, tersinmez ve adsorpsiyon kontrollü bir indirgeme piki gösterdi. Adsorptif kare dalga sıyırma voltametrisi (Ad-KDSV) kullanıldığında bileşik BRTÇ pH 2,0 içinde ve  -1,14 V'de (Ag/AgCl'ye karşı) iyi tanımlanmış bir voltametrik yanıt verdi. Deneysel sonuçlar pik akımı ile 1-50 µg mL-1 (2,8x10-6 mol L-1 - 4×10-4 mol L-1) derişim aralığında doğrusal bir ilişki olduğunu ortaya koymuştur. Gözlenebilirlik sınırı (GS) ve tayin alt sınırı (TAS)  sırasıyla 0,069 µg mL-1 (1,9×10-7 mol L-1) ve 0,229 µg mL-1 (6,32×10-7 mol L-1) olarak saptandı. Geliştirilen yöntemin kesinliği ve doğruluğu, tablet ve idrar numunelerinden yapılan geri kazanım çalışmaları ile kontrol edildi.

Keywords:

YALIN CAMSI CARBON ELECTRO using pharmaceutical formulation and rapid quarters of cortisol from humans Voltometric analysis
2019
Author:  
Abstract:

A simple, fast and sensitive electrochemical method for the direct determination of cortisol from commercial drugs and human urine was developed. The electrochemical reduction and quantitative analysis of cortisol was carried out in the Britton-Robinson tampon solution (BRTC) and pH 2.0 with the use of conversion voltameter (DV) and square wave voltameter (DV). In Cortisol DV, it showed an irreversible and adsorption-controlled reduction picky. When used Adsorptive Quadratic Wave Screening Voltametrics (Ad-KDSV), the compound gave a well-defined Voltametric response at pH 2.0 and at -1,14 V (in contrast to Ag/AgCl). Experimental results have shown that there is a linear relationship between 1-50 μg mL-1 (2,8x10-6 mol L-1 - 4×10-4 mol L-1) and the peak flow. The observability limit (GS) and the determination sub limit (TAS) were identified as 0.069 μg mL-1 (1,9×10-7 mol L-1) and 0.229 μg mL-1 (6.32×10-7 mol L-1) respectively. The accuracy and accuracy of the method developed was controlled by recovery studies from tablets and urine samples.

Keywords:

Fast Square Wave Voltammetric Determination Of Cortisol In Pharmaceutical Formulation and Human Urine Using The Bare Glassy Carbon Electrode
2019
Author:  
Abstract:

A simple, fast and sensitive electrochemical method for the direct determination of cortisol in commercial pharmaceutical product and human urine was developed. The electrochemical reduction and quantitative analysis of cortisol were performed in Britton Robinson Buffer Solution (BRBS, pH 2.0) with a bare glassy carbon electrode (GCE) using cyclic voltammetry (CV) and square wave voltammetry (SWV). The compound showed one irreversible and adsorption-controlled reduction peak in CV. When SWSV mode is used, the compound yielded a well-defined voltammetric response at about -1.14 V (vs. Ag/AgCl) in BRBS at pH 2.0. Experimental results revealed an excellent linear correlation between the peak current and the concentration in the range of 1-50 µg mL-1 (2.8×10-6-1.4×10-4 mol L-1). Detection and quantification limits were found to be 0.069 µg mL-1 (1.9×10-7 mol L-1) and 0.229 µg mL-1 (6.32×10-7 mol L-1), respectively. Precision and accuracy of the developed method were checked by recovery studies in spiked tablets and urine.

Keywords:

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Konya Mühendislik Bilimleri Dergisi

Field :   Fen Bilimleri ve Matematik; Sağlık Bilimleri; Ziraat, Orman ve Su Ürünleri

Journal Type :   Ulusal

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Konya Mühendislik Bilimleri Dergisi