| 光化学反应在分析化学中的应用研究 光激活产生碘测定食品中的抗坏血酸 |
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| 引用本文： | 门瑞芝,刘士斌,阎淑娟. 光化学反应在分析化学中的应用研究 光激活产生碘测定食品中的抗坏血酸[J]. 分析化学, 1989, 0(10) |
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| 作者姓名： | 门瑞芝 刘士斌 阎淑娟 |
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| 作者单位： | 吉林大学化学系，吉林大学化学系，吉林大学化学系 长春，130023，长春，130023，长春，130023 |
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| 摘 要： | 本文探讨了酸性介质中于紫外光的照射下,利用光激活产生碘的光化学动力学法测定抗坏血酸的可能性。结果表明,在0.25mol/L的硫酸介质中,在过量碘化钾的存在下,抗坏血酸的含量与到达滴定终点的时间在较宽的浓度范围内呈良好的线性关系。用于蜂蜜,黄瓜、蕃茄及Vc药片等样品分析,其相对标准偏差均在1％以下,准确度令人满意。
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| 关 键 词： | 光化学反应 抗坏血酸 碘 食品 |
DETERMINATION OF ASCORBIC ACID IN FOODSTUFFS USING PHOTOCHEMICAL GENERATION OF IODINE |
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| Men Ruizhi Liu Shibin Yan Shujuan. DETERMINATION OF ASCORBIC ACID IN FOODSTUFFS USING PHOTOCHEMICAL GENERATION OF IODINE[J]. Chinese Journal of Analytical Chemistry, 1989, 0(10) |
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| Authors: | Men Ruizhi Liu Shibin Yan Shujuan |
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| Abstract: | The experimental conditions for determination of ascorbic acid with photogenerated iodine due to UV irradiation were studied. The interference behaviour of various foreign ions was tested. This method has been applied to analyze ascorbic acid in honey, cucumber and tomato samato samples and tablets of medicine. It was shown that the precision and accuracy of the method were satisfactory. |
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| Keywords: | Photochemical reaction Ascorbic acid Iodine Foodstuffs |
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