Direct determination of bentazepam in a biological sample with a sepiolite-modified carbon paste electrode

1990 ◽  
Vol 2 (8) ◽  
pp. 643-646 ◽  
Author(s):  
L. Hernandez ◽  
P. Hernandez ◽  
E. Lorenzo
Keyword(s):  
Carbon Paste Electrode ◽  
Biological Sample ◽  
Direct Determination ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Paste Electrode

scholarly journals Electrochemical Behaviour of Tinidazole at 1,4-Benzoquinone Modified Carbon Paste Electrode and Its Direct Determination in Pharmaceutical Tablets and Urine by Differential Pulse Voltammetry

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Yosef Nikodimos ◽  
Beyene Hagos
Keyword(s):  
Carbon Paste Electrode ◽  
Limit Of Detection ◽  
Direct Determination ◽  
Differential Pulse ◽  
Modified Carbon Paste Electrode ◽  
Reduction Peak ◽  
Current Response ◽  
Carbon Paste ◽  
Paste Electrode

A simple and highly sensitive electrochemical method based on a 1,4-benzoquinone modified carbon paste electrode (1,4-BQMCPE) was described for the determination of tinidazole (TDZ). In Britton Robinson buffer solution, TDZ yields well-defined irreversible reduction peak at −0.344 V on a 1,4-BQMCPE. Compared with that on a bare CPE, the reduction peak of TDZ increased significantly on the modified CPE and the effects of different parameters on the voltammetric responses were also investigated. Differential pulse voltammetric method was proposed and optimized for TDZ determination and its reductive peak current response at 1,4-BQMCPE was found to show linear dependence on the concentration of TDZ in the range of 1.0 × 10−6 to 5.0 × 10−4 M with a linear regression equation, correlation coefficient, limit of detection (LOD), and limit of quantification (LOQ) of IPC (μA) = 0.19958 + 0.02657C (μM), 0.99486, 1.10 × 10−7 M, and 3.77 × 10−7, respectively. Excellent recovery results for spiked TDZ in pharmaceutical tablet samples ranging within 97.44–97.51% and in urine ranging within 95.37–96.91% were observed. The selectivity of the method for TDZ was further studied in the presence of selected potential interferents and confirmed the potential applicability of the developed method for the determination of TDZ.

Direct determination of lead by bioaccumulation at a moss-modified carbon paste electrode

1993 ◽  
Vol 273 (1-2) ◽  
pp. 219-227 ◽  
Author(s):  
J.A. Ramos ◽  
E. Bermejo ◽  
A. Zapardiel ◽  
J.A. Pérez ◽  
L. Hernández
Keyword(s):  
Carbon Paste Electrode ◽  
Direct Determination ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Paste Electrode
Sign in / Sign up

Export Citation Format

Share Document