关于乳粉中钙元素质控样品的研制及应用

Development and application of quality control samples of calcium in milk powder

中文关键词:  实验室质量控制  质控样品  钙  不确定度评价

英文关键词:laboratory quality control  quality control sample  calcium  uncertainty evaluation

中文摘要:

      目的 运用喷雾干燥技术进行质控样品的制备, 将其应用于乳制品实验室乳粉中钙的含量测定、质量控制及检测项目的开展等。方法 通过目标物的添加制备, 采用分装设备进行分装和包装、均匀性及稳定性统计学评价, 利用GB 5009.92-2016《食品安全国家标准 食品中钙的测定》中第一法进行实物质控样品赋值的研究、不确定度的确定。结果 乳粉中钙元素实物质控样品定值结果为875 mg/100 g, 质控样品的基质和企业实验室日常检测样品基质一致, 检测结果更具有代表性。结论 乳粉中钙元素实物质控样品满足企业实验室内部质量控样品的要求, 对于企业内部相关样品中钙的测定具有重要意义。

英文摘要:

      Objective To prepare the quality control sample by spray drying technology, and apply it to the determination of calcium content, the quality control and the development of testing items in dairy products. Methods Through the addition and preparation of the target, the distribution equipment is used for the statistical evaluation of the distribution and packaging, uniformity and stability, and the first method in GB 5009.92-2016 National food safety standard-Determination of calcium in food was used to assign the actual substance control sample research and determination of uncertainty. Results The fixed value of calcium in the milk powder was 875 mg/100 g. The matrix of the quality control sample is the same as the matrix of the daily test sample in the enterprise laboratory, and the test results are more representative. Conclusion The quality control sample of calcium in milk powder meets the requirements of internal quality control samples in the enterprise laboratory, which is of great significance for the determination of calcium in relevant samples within the enterprise.