| 丹皮酚的伏安行为及其应用 |
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| 引用本文： | 于乃佳,于泳,胡劲波,李启隆. 丹皮酚的伏安行为及其应用[J]. 北京师范大学学报(自然科学版), 2001, 2(1): 79-82 |
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| 作者姓名： | 于乃佳 于泳 胡劲波 李启隆 |
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| 作者单位： | 北京师范大学化学系, 100875, 北京 |
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| 基金项目： | 国家自然科学基金资助项目(29875003) |
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| 摘 要： | 在 pH =7.8的NaOH KH2 PO4 底液中 ,用单扫示波极谱法可以得到一灵敏的丹皮酚导数还原峰 ,其峰电位Ep=- 1.6 5V(vs .SCE) .峰电流与丹皮酚的浓度在 4 .0× 10 - 7～ 1.0× 10 - 5mol·L- 1范围内呈线性关系 (r =0 .9998) ,检出限为 2 .0× 10 - 7mol·L- 1.该法用于牡丹皮中丹皮酚质量分数的测定 ,结果令人满意 .用线性扫描和循环伏安法研究体系的行为 ,结果表明 ,其电极过程为具有吸附性的不可逆过程
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| 关 键 词： | 丹皮酚 伏安行为 吸附 中药丹皮 单扫示波极谱法 峰电流 峰电位 质量分数 |
| 修稿时间： | 2000-07-25 |
STUDIES ON VOLTAMMETRIC BEHAVIOR OF PAEONOL AND ITS APPLICATION |
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| Yu Naijia Yu Yong Hu Jingbo Li Qilong. STUDIES ON VOLTAMMETRIC BEHAVIOR OF PAEONOL AND ITS APPLICATION[J]. Journal of Beijing Normal University(Natural Science), 2001, 2(1): 79-82 |
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| Authors: | Yu Naijia Yu Yong Hu Jingbo Li Qilong |
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| Abstract: | In 0.1mol.L-1 NaOH-KH2PO4 buffer solution (pH=7.8), a sensitivereduction peak of paeonol is obtained by oscillopolarography. The peak potential is -1.65V(vs.SCE). The peak current is directly proportional to the concentration of paeonol over the range of 4.0×10-7～1.0×10-7 mol.L-1 with the detection limit of 2.0×10-7 mol.L-1. The method is applied to the determination of paeonol in paeonia suffruticosa with satisfactory results. The voltammetric behavior of paeonol is studied by linear sweep and cyclic voltammetry. Its reduction process is irreversible with adsoption characteristics. |
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| Keywords: | paeonol oscillopolarography voltammetric behavior adsorption |
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