کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1228514 | 968472 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Anodic square-wave stripping voltammetric analysis of epinephrine using carbon fiber microelectrode Anodic square-wave stripping voltammetric analysis of epinephrine using carbon fiber microelectrode](/preview/png/1228514.png)
The behavior of epinephrine on a carbon fiber microelectrode (CFME) was studied with cyclic voltammetry and square-wave (SW) stripping voltammetry in order to find optimum conditions for its analysis using the CFME. An anodic stripping peak at about 0.20 V (vs. Ag/AgCl) was utilized. Under optimum conditions for anodic stripping (a pH value of 7.4, a deposition potential of − 0.5 V, a deposition time of 90 s, a final potential of 0.8 V, a SW frequency of 20 Hz, a step potential of 5 mV, and an amplitude of 45 mV), the calibration was linear in the concentration range of 0.0∼0.4 mg/L, and the detection limit was found to be 0.009 mg/L with a relative standard deviation 0.18% (n = 12) at 0.2 mg/L. The analytical performance of the CMFE, which is unmodified, is comparable to or better than other voltammetric results with various modified electrodes.
Journal: Microchemical Journal - Volume 82, Issue 1, January 2006, Pages 113–118