Citation: Li Jun Li, Qi Feng Chen, Lai Bo Yu, Zhao Heng Zhong, Jun Feng, Hao Cheng, Hong Xing Kong, Jian Ling Wu. Determination of chlorogenic acid by flow injection irreversible biamperometry[J]. Chinese Chemical Letters, ;2007, 18(4): 431-434. doi: 10.1016/j.cclet.2007.02.018 shu

Determination of chlorogenic acid by flow injection irreversible biamperometry

a Department of Biological and Chemical Engineering, Guangxi University of Technology, Liuzhou 545006, China;
b College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China

Received Date: 4 December 2006

Fund Project: Thanks for the financial support of the National Natural Science Foundation of China (No. 20665001),Guangxi Science Fund (No. 0640029) and Innovation Project of Guangxi Graduate Education (No. 2006105930502m33).

A flow injection irreversible biamperometric method for the determination of chlorogenic acid is described. The proposed method is based on the electrochemical oxidation of chlorogenic acid at pretreated platinum electrode and the reduction of permanganate at another electrode to form an irreversible biamperometric detection system. Under the external potential difference(△E) of 0 V, in the 0.05 mol/L sulfuric acid, chlorogenic acid can be determined over the range 0.8-120 mg/L with a sample measurement frequency of 80 samples/h. The detection limit is 0.18 mg/L. The proposed method exhibits the satisfactory reproducibility with a relative standard derivation (R.S.D.) of 2.21% for 19 successive determinations of 40 mg/L.
- Flow injection,
- Irreversible biamperometry,
- Chlorogenic acid,
- Honeysuckle
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