Work

Determination of Trace Antimony by Square-Wave Adsorptive Cathodic Stripping Voltammetry at an Ex Situ Prepared Bismuth Film Electrode

Year: 2014

Type: article

Abstract: A square-wave adsorptive cathodic stripping voltammetric protocol to determine trace antimony(III) in the presence of gallic acid (GA) at an ex situ prepared bismuth ﬁlm electrode (BiFE) has been investigated. A well-deﬁned and sensitive stripping peak of the Sb(III)-gallic acid complex was observed at −0.53 V (vs. SCE) in a 0.1M acetate buffer solution (pH 4.8) at a deposition potential of −0.38 V (120 s). The experimental variables as well as potential interferences were studied. Compared with the ex situ mercury ﬁlm electrode (MFE), the ex situ prepared BiFE displayed a better electroanalytical performance for the determination of antimony(III). Under the optimized conditions, the linear range was obtained between 2–25 μg/L, the limit of detection for antimony(III) was 60 ng/L and the relative standard deviation was 3.37% at the 10 μg/L level (n = 10). This method was applied to determine trace amounts of antimony in several environmental samples with the satisfactory results.

Source: Journal of The Electrochemical Society

DOI: 10.1149/2.0521409jes

Authors: Jiali Su, Shangwei Zhong, Xiangjun Li, Hong Zou

Institutions: University of Chinese Academy of Sciences, Capital Normal University

Language: English

Topic: Electrochemical Analysis and Applications

Subfield: Electrochemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,950

Funder: National Natural Science Foundation of China