引用本文:
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
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
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
Determination of chlorogenic acid by flow injection irreversible biamperometry
摘要:
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.
English
Determination of chlorogenic acid by flow injection irreversible biamperometry
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(△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.
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Key words:
- Flow injection
- / Irreversible biamperometry
- / Chlorogenic acid
- / Honeysuckle
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