摘要
目的:用高效液相色谱准确、快速测定小麦粉中过氧化苯甲酰。方法:小麦粉直接以水溶解,经振荡及超声提取,滤膜过滤后上高效液相色谱进行测定。结果:苯甲酸在0.2μg/ml～100μg/ml范围内呈良好线性,检出限为0.3mg/kg。平均回收率在94.1%～99.0%范围内。相对标准偏差小于2%。经检验,本法对CNCA能力验证剩余样品的检测结果与CNCA公布结果基本一致。结论:本法简单快捷,结果准确,重现性好,适用于小麦粉中过氧化苯甲酰的测定。
Objective： To determination the benzoyl peroxide in wheat flour in a rapid and accurate way. Methods： After being extracted by water, shaking extraction, ultrasonic vibration extraction and membrane filtration ,wheat flour were analyzed by HPLC. Results： The benzoyl peroxide was shown to be linear in the range from 0.2 μ g/ml to 100 μ g/ml, the limit of detection was 0.3mg/kg.The recovery of the method was between 94.1% and 99.0%. The precisions （RSD） were less than 2%. There was no statistical difference between the sample results of this method and the results reported by CNCA. Conclusion： The method is simple, sensitive, accurate, specific and reproducible in the determination of benzoyl peroxide in wheat flour.
出处
《福建分析测试》
CAS
2012年第4期16-19,共4页
Fujian Analysis & Testing
关键词
高效液相色谱
过氧化苯甲酰
快速测定
high performance liquid chromatography
benzoyl peroxide
Determination
