Quantification of terbutaline in pharmaceutical formulation and human serum by adsorptive stripping voltammetry at a glassy carbon electrode

被引:19
作者
Beltagi, Amr Mohamed [1 ]
El-Desoky, Hana Salah
Ghoneim, Mohamed Metwalli
机构
[1] Kafr El Sheikh Univ, Dept Chem & Phys, Kafr Al Sheikh 33516, Egypt
[2] Tanta Univ, Fac Sci, Dept Chem, Anal Chem Res Unit, Tanta 31527, Egypt
关键词
terbutaline; Bricanyl (R) tablet; human serum; determination; cyclic voltammetry; adsorptive stripping voltammetry; PERFORMANCE LIQUID-CHROMATOGRAPHY; IONIZATION MASS-SPECTROMETRY; POTENTIAL SWEEP VOLTAMMETRY; HUMAN PLASMA; COLORIMETRIC DETERMINATION; SPECTROPHOTOMETRIC DETERMINATION; ELECTROCHEMICAL DETECTION; FLUORESCENCE DETECTION; ORCIPRENALINE SULFATE; HUMAN URINE;
D O I
10.1248/cpb.55.1018
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
The electrochemical oxidative behavior of terbutaline at the glassy carbon electrode was studied in a series of the Britton-Robinson buffer of pH 2-11. Cyclic and square-wave voltammograms of terbutaline at the pH values <= 9 exhibited a single irreversible anodic peak. A fully validated, simple, sensitive and precise square-wave adsorptive anodic stripping voltammetric procedure was described for the determination of terbutaline in bulk form, tablets and human serum. For 5x10(-8) M bulk terbutaline a mean recovery of 98.78 +/- 0.94% (n=5) was achieved following its preconcentration by adsorptive accumulation onto the glassy carbon electrode at a +0.15 V (vs. Ag/AgCl/KCls) for 180 s. Limit of detection of 6x10(-9) M and limit of quantitation of 2x10(-8) M terbutaline were achieved in the bulk form or its formulations (Bricanyl (R) tablets). The described square-wave adsorption anodic stripping voltammetric procedure was successfully applied for the determination of terbutaline in human serum following medium exchange. Limit of detection of 1.41x10(-8) M (3.173 ng ml(-1)) and limit of quantitation of 4.70x10(-8) M (10.575 ng ml(-1)) were achieved in human serum with a mean recovery of 98.11 +/- 1.13%.
引用
收藏
页码:1018 / 1023
页数:6
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