期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 235, 期 -, 页码 67-73出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.05.051
关键词
Response surface methodology; Square Wave Anodic Stripping; Voltammetry; Interaction effect; Bismuth film electrode; Cd(II)
资金
- National High Technology Research and Development Program of China [2013AA102302]
- Research Fund for the Doctoral Program of Higher Education of China [20120008110033]
- Fundamental Research Funds for the Central Universities [2016 XD001]
- Shandong Provincial Natural Science Foundation of China [ZR2015CM016]
In this paper, a Box-Behnken design (BBD) was conducted and the response surface methodology (RSM) was employed to investigate the influence to different parameters to Cd(II) detection at bismuth film/glassy carbon electrode (Bi/GCE) by Square Wave Anodic Stripping Voltammetry (SWASV), and the stripping peak current was used to evaluate the detection performance of each parameter combination. A three-level-three-factor full factorial (33) BBD has been conducted to investigate interaction effects. The relationship between stripping peak current and the three factors was quantitatively described by a multivariate regression model through the RSM. The optimal parameter combination within the studied experimental range was obtained to improve the detection performance, considering the interaction effects among Bi(III) concentration, pH and deposition potential. Under the optimal parameter combination, SWASV was applied to detect the concentration of Cd(II) on Bi/GCE, the linear calibration curve ranged from 1 to 170 with a detection limit of 0.3 mu g/L (S/N = 3). The proposed analytical procedure was further applied to detect trace Cd(II) in soil samples with satisfactory results. (C) 2016 Elsevier B.V. All rights reserved.
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