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首页> 外文期刊>Electroanalysis >Direct Voltammetric Determination of Ascorbic Acid in Natural Paprika Fruits Without Sample Pretreatment
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Direct Voltammetric Determination of Ascorbic Acid in Natural Paprika Fruits Without Sample Pretreatment

机译：无需样品预处理即可直接伏安法测定天然辣椒粉水果中的抗坏血酸

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Direct electrochemical measuring technique for estimation of the ascorbic acid (AA) content of freshly cut yellow pepper fruits without special sample treatment was worked out. Dialysis membrane modified glassy carbon electrode combined with short time chronoamperometric measuring method was employed to eliminate the interfering effect of tortuosity and electrode fouling. Viscosity change inside the diffusion layer was taken in account. AA content of the fruit was found to be 114.5mg/100g, and it is shown that the metal ions derived from iron blade are able to accelerate the oxidation process significantly. Classical iodometric titration was applied as a reference method.
机译：提出了一种直接电化学测量技术，无需经过特殊的样品处理即可估算鲜切的黄椒果实中的抗坏血酸（AA）含量。透析膜修饰玻碳电极结合短时间计时电流法，消除了曲折和电极结垢的干扰作用。考虑了扩散层内部的粘度变化。结果表明，该果实的AA含量为114.5mg / 100g，表明铁叶片中的金属离子能够显着促进氧化过程。采用经典碘量滴定法作为参考方法。

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