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題名 | Carbon Surfaces for the Oxidative Quantification of Pravastatin: Glassy-Carbon vs. Screen-Printed Carbon Electrodes=降血脂藥物Pravastatin氧化定量研究:玻璃碳電極及網版印刷碳電極 |
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作者 | Neves, Marta M. P. S.; Nouws, Henri P. A.; Delerue-matos, Cristina; | 書刊名 | Journal of Food and Drug Analysis |
卷期 | 18:5 2010.10[民99.10] |
頁次 | 頁353-357+368 |
分類號 | 418.227 |
關鍵詞 | 方波伏安法; 電化氧化; 玻璃碳電極; 網版印刷碳電極; Pravastatin; Square-wave voltammetry; Electrochemical oxidation; Glassy-carbon electrode; Screen-printed carbon electrode; |
語文 | 英文(English) |
英文摘要 | ABSTRACT The electrooxidative behavior of pravastatin (PRV) in aqueous media was studied by square-wave voltammetry at a glassy-carbon electrode (GCE) and at a screen-printed carbon electrode (SPCE). Maximum peak current intensities in a pH 5.0 buffer were obtained at +1.3 V vs. AgCl/Ag and +1.0 V vs. Ag for the GCE and SPCE surface respectively. Validation of the developed methodologies revealed good performance characteristics and confirmed their applicability to the quantification of PRV in pharmaceutical products, without significant sample pretreatment. A comparative analysis between the two electrode types showed that SPCEs are preferred as an electrode surface because of their higher sensitivity and the elimination of the need to clean the electrode’s surface for its renewal, which frequently is, if not always, the rate-limiting step in voltammetric analysis. |
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