高效液相色谱法测定橙汁中山梨酸含量的不确定度评定

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中文摘要：目的:评定高效液相色谱法测定橙汁中山梨酸含量的不确定度,确保检测结果的准确性和可靠性.方法:采用《食品安全国家标准食品中苯甲酸、山梨酸和糖精钠的测定》(GB 5009.28-2016)中第一法液相色谱法对 2 个考核样品和内控样品中山梨酸含量进行测定,建立数学模型,计算合成标准不确定度和扩展不确定度.结果:考核样品 1 中山梨酸含量为(0.034 23±0.001 44)g·kg-1(k=2),考核样品 2 中山梨酸的含量为(0.057 43±0.001 72)g·kg-1(k=2).结论:该测定结果的不确定度主要来源于高效液相色谱仪的重复性测定、标准曲线拟合、山梨酸标准溶液浓度,因此在样品测定时要对这些因素加以控制,以提高检测结果的准确性.

外文标题：Evaluation of Uncertainty in Determination of Sorbic Acid in Orange Juice by High Performance Liquid Chromatography

外文摘要：Objective:The uncertainty of determination of sorbic acid in orange juice by HPLC was evaluated to ensure the accuracy and reliability of the test results.Method:The content of sorbic acid in two blind samples and quality control samples was determined by liquid chromatography,the first method in GB 5009.28-2016,and a mathematical model was established to calculate the synthesis standard uncertainty and extended uncertainty.Result:The sorbic acid content in sample 1 was(0.034 23±0.001 44)g·kg-1(k=2),and the sorbic acid content in sample 2 was(0.057 43±0.001 72)g·kg-1(k=2).Conclusion:The uncertainty in the determination result is mainly derived from the repeatability determination of high performance liquid chromatography,standard curve fitting and sorbic acid standard solution concentration.Therefore,these factors should be controlled during the sample determination to improve the accuracy of the determination results.

外文关键词：

high performance liquid chromatographyorange juicesorbic aciduncertainty

作者：

罗玲、车锐

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作者单位：

都江堰市疾病预防控制中心,四川成都 611830

关键词：

高效液相色谱法橙汁山梨酸不确定度

出版年：

2024

DOI：