Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 2824-2828 |
| Number of pages | 5 |
| Journal | Electrochimica Acta |
| Volume | 55 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2010 Mar 1 |
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Keywords
- Anodic stripping voltammetry
- Diamond electrodes
- Zinc
ASJC Scopus subject areas
- Electrochemistry
- Chemical Engineering(all)
Cite this
Anodic stripping voltammetry of zinc at boron-doped diamond electrodes in ammonia buffer solution. / Langeloth, Michael; Chiku, Masanobu; Einaga, Yasuaki.
In: Electrochimica Acta, Vol. 55, No. 8, 01.03.2010, p. 2824-2828.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anodic stripping voltammetry of zinc at boron-doped diamond electrodes in ammonia buffer solution
AU - Langeloth, Michael
AU - Chiku, Masanobu
AU - Einaga, Yasuaki
PY - 2010/3/1
Y1 - 2010/3/1
N2 - 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.
AB - 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.
KW - Anodic stripping voltammetry
KW - Diamond electrodes
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=76449085830&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=76449085830&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2009.12.097
DO - 10.1016/j.electacta.2009.12.097
M3 - Article
VL - 55
SP - 2824
EP - 2828
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
IS - 8
ER -