کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
190875 | 459709 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Anodic stripping voltammetry of zinc at boron-doped diamond electrodes in ammonia buffer solution Anodic stripping voltammetry of zinc at boron-doped diamond electrodes in ammonia buffer solution](/preview/png/190875.png)
This paper describes the deposition of zinc(II) with anodic stripping voltammetry on the boron-doped diamond electrode. We illustrate the dependency of several parameters on the magnitude of the oxidation peak and try to optimize the method. The supporting electrolyte was found to influence the oxidation peak magnitude. Compared with acetic acid, the most frequently used supporting electrolyte, ammonia buffer solution leads to a four times higher signal. We assume that the formation of zinc complexes, primarily tetraaminezinc(II), are responsible for the better response. Further factors studied and assessed include buffer pH, buffer concentration, deposition potential, deposition time and scan rate. With the improved conditions, a final detection limit of 5 ppb was accomplished.
Journal: Electrochimica Acta - Volume 55, Issue 8, 1 March 2010, Pages 2824–2828