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稀释过氧化苯甲酰,又称面粉增白剂,用于小麦面粉品质改良。其过氧化苯甲酰含量测定的标准方法为化学滴定法,即在丙酮溶液中,以硫代硫酸钠标准滴定溶液滴定过氧化苯甲酰与碘化钾生成的游离碘。但该法滴定终点不易确定,容易造成误差。我们参照文献,试验了稀释过氧化苯甲酰含量测定的高效液相色谱法。样品中过氧化苯甲酰用无水乙醇提取,用碘化
Dilution of benzoyl peroxide, also known as flour brightener, used for wheat flour quality improvement. The standard method for the determination of benzoyl peroxide content is chemical titration, ie titration of free iodine by benzoyl peroxide and potassium iodide with sodium thiosulfate standard titration solution in acetone solution. However, the end of the titration method is not easy to determine, likely to cause errors. We refer to the literature, the test diluted benzoyl peroxide content determination of high performance liquid chromatography. Benzoyl peroxide in the sample was extracted with absolute ethanol and iodinated