Determination of Total Germanium in Chinese Herbal Remedies by Square-Wave Catalytic Adsorptive Cathodic Stripping Voltammetry at an Improved Bismuth Film Electrode
Joint Authors
Su, Jiali
Zou, Hong
Li, Xiangjun
Chen, Liang
Tong, Jiefeng
Jia, Wenfang
Zhong, Shangwei
Source
International Journal of Electrochemistry
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-11
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A catalytic adsorptive cathodic stripping voltammetric method on an improved bismuth film electrode (BiFE) for the determination of trace germanium in the presence of pyrogallol has been investigated.
A well-defined and sensitive stripping peak of Ge(IV)-pyrogallol complex was observed at −0.79 V (versus SCE) in a 0.1 M acetate buffer solution (pH 4.8) at a deposition potential of −0.34 V.
The reduction current is catalytically enhanced by adding KBrO3.
The experimental variables and potential interference were studied.
Compared with the BiFE plated in the solution prepared based on HAc-NaAc without trisodium citrate, the improved BiFE electrodeposited in the solution of HAc-NaAc containing trisodium citrate displayed a better electroanalytical performance for the determination of germanium(IV).
Under the optimized conditions, the detection limit of Ge(IV) was 60 ng L−1, and the relative standard deviation (RSD) was 3.73% at 5 μg L−1 level (n=9).
This method was successfully applied to determine the total germanium in several Chinese herbal remedies.
American Psychological Association (APA)
Zhong, Shangwei& Su, Jiali& Chen, Liang& Tong, Jiefeng& Jia, Wenfang& Li, Xiangjun…[et al.]. 2013. Determination of Total Germanium in Chinese Herbal Remedies by Square-Wave Catalytic Adsorptive Cathodic Stripping Voltammetry at an Improved Bismuth Film Electrode. International Journal of Electrochemistry،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-494448
Modern Language Association (MLA)
Zhong, Shangwei…[et al.]. Determination of Total Germanium in Chinese Herbal Remedies by Square-Wave Catalytic Adsorptive Cathodic Stripping Voltammetry at an Improved Bismuth Film Electrode. International Journal of Electrochemistry No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-494448
American Medical Association (AMA)
Zhong, Shangwei& Su, Jiali& Chen, Liang& Tong, Jiefeng& Jia, Wenfang& Li, Xiangjun…[et al.]. Determination of Total Germanium in Chinese Herbal Remedies by Square-Wave Catalytic Adsorptive Cathodic Stripping Voltammetry at an Improved Bismuth Film Electrode. International Journal of Electrochemistry. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-494448
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-494448