Voltammetric behavior of benzo[a]pyrene at boron-doped diamond electrode: A study of its determination by adsorptive transfer stripping voltammetry based on the enhancement effect of anionic surfactant, sodium dodecylsulfate

Talanta ◽  
2011 ◽  
Vol 85 (1) ◽  
pp. 441-448 ◽  
Author(s):  
Yavuz Yardım ◽  
Abdulkadir Levent ◽  
Ertuğrul Keskin ◽  
Zühre Şentürk
Keyword(s):  
Anionic Surfactant ◽  
Sodium Dodecylsulfate ◽  
Stripping Voltammetry ◽  
Enhancement Effect ◽  
Boron Doped Diamond ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Boron Doped Diamond Electrode ◽  
Voltammetric Behavior

scholarly journals Voltammetric behavior of rutin at a boron-doped diamond electrode. Its electroanalytical determination in a pharmaceutical formulation

2013 ◽  
Vol 11 (10) ◽  
pp. 1674-1681 ◽  
Author(s):  
Pınar Pınar ◽  
Yavuz Yardım ◽  
Zühre Şentürk
Keyword(s):  
Stripping Voltammetry ◽  
Adsorptive Stripping Voltammetry ◽  
Cyclic Voltammograms ◽  
Boron Doped Diamond ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Irreversible Oxidation ◽  
Boron Doped Diamond Electrode ◽  
Voltammetric Behavior ◽  
First Time

AbstractThis paper examined for the first time, the possibilities of the usage of a boron-doped diamond electrode for the redox behavior of rutin using cyclic and adsorptive stripping voltammetry. The cyclic voltammograms showed a pair of redox peaks at lower potentials followed by an irreversible oxidation peak at higher positive potential. Using square-wave adsorptive stripping voltammetry, the compound yielded a well-defined voltammetric response in Britton-Robinson buffer, pH 4.0 at +0.48 V (vs. Ag/AgCl) (after 60 s accumulations at a fixed potential of 0.2 V). The calibration curve was linear in the concentration range from 0.01 µg mL−1 to 0.1 µg mL−1 (1.64×10−8 M − 1.64×10−7 M). A detection limit of 0.0017 µg mL−1 (2.78×10−9 M) was observed without any chemical modifications and electrochemical surface pretreatments. As an example, the practical applicability of boron-doped diamond electrode was tested with the measurement of rutin in dietary supplement products.

scholarly journals Voltammetric behavior and determination of the bronchodilator doxofylline at a boron-doped diamond electrode

2012 ◽  
Vol 31 (2) ◽  
pp. 195 ◽  
Author(s):  
Sachin Saxena ◽  
Ratnanjali Shrivastava ◽  
Soami P. Satsangee
Keyword(s):  
Sodium Dodecyl ◽  
Oxidation Mechanism ◽  
Fold Increase ◽  
Tween 20 ◽  
Boron Doped Diamond ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Boron Doped Diamond Electrode ◽  
Asthma Drug ◽  
Voltammetric Behavior

The electrochemical behavior of the asthma drug doxofylline was studied at a boron-doped diamond electrode in BR buffer (pH 3.8) by square-wave voltammetry. Cyclic voltammetry revealed the oxidation of doxofylline as an irreversible diffusion-controlled process. The oxidation mechanism was proposed and the drug was studied in the presence of solubilized systems like Tween-20 (T-20), sodium dodecyl sulfate (SDS), Triton X-100 (TTN), dioxane (DO), dimethylformamide (DMF), diethyl ether (DEE), benzene and methanol (MeOH). Comparison of the current responses in the solution system explained the sensitivity of the boron-doped diamond electrode (BDDE) with a three-fold increase in the current value compared to that of a glassy carbon electrode (GCE) at a fixed concentration of doxofylline. Peak current values varied linearly with increasing concentration and the LOD and LOQ were found to be 3.48 and 10.56 µg/ml, respectively. This method was employed to investigate doxofylline in the pharmaceutical formulation.

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