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Zheng J, Zhang Y, Yang P. An ionic liquid-type carbon paste electrode for electrochemical investigation and determination of calcium dobesilate. Talanta. 2007;73(5):920-5doi: 10.1016/j.talanta.2007.05.016.
Zheng, J., Zhang, Y., & Yang, P. (2007). An ionic liquid-type carbon paste electrode for electrochemical investigation and determination of calcium dobesilate. Talanta, 73(5), 920-5. https://doi.org/10.1016/j.talanta.2007.05.016
Zheng, Jianbin, et al. "An ionic liquid-type carbon paste electrode for electrochemical investigation and determination of calcium dobesilate." Talanta vol. 73,5 (2007): 920-5. doi: https://doi.org/10.1016/j.talanta.2007.05.016
Zheng J, Zhang Y, Yang P. An ionic liquid-type carbon paste electrode for electrochemical investigation and determination of calcium dobesilate. Talanta. 2007 Oct 31;73(5):920-5. doi: 10.1016/j.talanta.2007.05.016. Epub 2007 May 21. PMID: 19073121.
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Talanta. 2007 Oct 31;73(5):920-5. doi: 10.1016/j.talanta.2007.05.016. Epub 2007 May 21.

An ionic liquid-type carbon paste electrode for electrochemical investigation and determination of calcium dobesilate.

Talanta

Jianbin Zheng, Ya Zhang, Pingping Yang

Affiliations

  1. Institute of Analytical Science, Shaanxi Provincial Key Lab of Electroanalytical Chemistry, Northwest University, Xi'an, Shaanxi 710069, China.

PMID: 19073121 DOI: 10.1016/j.talanta.2007.05.016

Abstract

An ionic liquid-type carbon paste electrode (IL-CPE) had been fabricated by replacing non-conductive organic binders with a conductive room temperature ionic liquid, 1-pentyl-3-methylimidazolium hexafluorophosphate (PMIMPF(6)). The electrochemical responses of calcium dobesilate were investigated at the IL-CPE and the traditional carbon paste electrode (T-CPE) in 0.05molL(-1) H(2)SO(4), respectively. The results showed the superiority of IL-CPE to T-CPE in terms of provision of higher sensitivity, faster electron transfer and better reversibility. A novel method for determination of calcium dobesilate was proposed. The oxidation peak current was rectilinear with calcium dobesilate concentration in the range of 8.0x10(-7) to 1.0x10(-4)molL(-1), with a detection limit of 4.0x10(-7)molL(-1) (S/N=3) by differential pulse voltammetry. The proposed method was applied to directly determine calcium dobesilate in capsule and urine samples.

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