Determination of chlorogenic acid by flow injection irreversible biamperometry

  • Li L
  • Chen Q
  • Yu L
 et al. 
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Abstract

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 (ΔE) 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. © 2007 Li Jun Li.

Author-supplied keywords

  • Chlorogenic acid
  • Flow injection
  • Honeysuckle
  • Irreversible biamperometry

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Authors

  • Li Jun Li

  • Qi Feng Chen

  • Lai Bo Yu

  • Zhao Heng Zhong

  • Jun Feng

  • Hao Cheng

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