| Determination of chlorogenic acid by flow injection irreversible biamperometry |
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| 作者姓名： | Li Jun Li Qi Feng Chen Lai Bo Yu Zhao Heng Zhong Jun Feng Hao Cheng Hong Xing Kong Jian Ling Wu |
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| 作者单位： | Li Jun Lia，*，Qi Feng Chen b，Lai Bo Yu b，Zhao Heng Zhong b，Jun Feng b，Hao Cheng a，Hong Xing Kong a，Jian Ling Wu b aDepartment of Biological and Chemical Engineering，Guangxi University of Technology，Liuzhou 545006，China bCollege of Chemistry and Chemical Engineering，Guangxi University，Nanning 530004，China |
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| 摘 要： | A flow injection irreversible biamperometric method for the determination of chlorogenic acid is described.The proposedmethod is based on the electrochemical oxidation of chlorogenic acid at pretreated platinum electrode and the reduction ofpermanganate 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 samplemeasurement frequency of 80 samples/h.The detection limit is 0.18 mg/L.The proposed method exhibits the satisfactoryreproducibility with a relative standard derivation(R.S.D.)of 2.21%for 19 successive determinations of 40 mg/L.
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| 关 键 词： | 绿原酸 测定 流动注射 单向双安培滴定法 多酚类 |
| 收稿时间： | 2006-12-04 |
Determination of chlorogenic acid by flow injection irreversible biamperometry |
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| 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. |
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| Authors: | Li Jun Li Qi Feng Chen Lai Bo Yu Zhao Heng Zhong Jun Feng Hao Cheng Hong Xing Kong Jian Ling Wu |
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| Institution: | 1. Department of Biological and Chemical Engineering, Guangxi University of Technology, Liuzhou 545006, China;2. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China |
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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. |
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| Keywords: | Flow injection Irreversible biamperometry Chlorogenic acid Honeysuckle |
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