頁籤選單縮合
題 名 | A Bipotentiostat Based 4-Electrode Detection System for HPLC Analysis |
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作 者 | 趙銘輝; 黃宣容; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 48:4 2001.08[民90.08] |
頁 次 | 頁763-768 |
分類號 | 341.37 |
關鍵詞 | Microcomputer interfacing; Biopotentiostat; Electrode-array; HPLC; |
語 文 | 英文(English) |
英文摘要 | With the assist of a microcomputer interfacing, a bipotentiostat incorporated 4-electrode detection system was developed as a versatile electrochemical detector for HPLC. An amperometric chromatogram and two three-dimensional chromatovoltammograms characterizing the electrochemical characteristics of analytes can be obtained in a single chromatographic run. By following the three operation modes developed, both the oxidizable and reducible analytes contained in sample solutions can be determined. The analytical capability of the 4-electrode detection system was demonstrated by the analysis of solutions containing hydroquinone, catechol and ascorbic acid. From the calibration graphs obtained, linear coefficients better than 0.9992 were found for hydroquinone and catechol in a concentration range of 1.0 ’ 10-4 to 1.0 ’ 10-7 M, and a linear coefficient of 0.9929 was found for ascorbic acid in a concentration range of 1.0 ’ 10-4 to 1.0 ’ 10-6 M. The detection limits (based on S/N = 3) found were about 1.0 ’ 10-7 M for hydroquinone and catechol and was 1.0 ’ 10-6 M for ascorbic acid. |
本系統中英文摘要資訊取自各篇刊載內容。