摘要
对姜粉中噻虫胺基体标准物质研制过程中的不确定度进行分析,通过数学模型对产生不确定度的均匀性、短期稳定性、长期稳定性、合作定值A类和合作定值B类5个方面进行评估。结果表明:对总不确定度的贡献程度,短期稳定性最大,为45.0%;长期稳定性次之,为24.4%;均匀性贡献程度也较大,为16.4%;合作定值A类和B类分别为3.6%、10.6%。在基体标准物质研制过程中,要规范操作,确保均匀性;在运输过程中,应采取冷链运输,确保短期稳定性;在储存过程中,要注意取用的规范性,确保长期稳定性。该基体标准物质特征值为(0.109±0.006)mg/kg,适用于农产品中噻虫胺的方法确认和质量控制,有助于提高检测结果的准确性,并为农产品相关基体标准物质的不确定度评定提供参考。
The uncertainty in the development process of clothianidin matrix standard substance in ginger powder was evaluated through mathematical models from five aspects:uniformity,shortterm stability,long-term stability,cooperative fixed value A,and cooperative fixed value B.The results indicated that shortterm stability had the highest contribution(45.0%)to the total uncertainty,followed by long-term stability(24.4%)and uniformity(16.4%).The cooperative fixed values A and B showed the contribution rates of 3.6%and 10.6%,respectively.In the development process of matrix standard substances,standardized operations should be carried out to ensure uniformity.During transportation,cold chain transportation should be adopted to ensure shortterm stability.During storage,attention should be paid to collection to ensure long-term stability.The characteristic value of this matrix standard substance was(0.109±0.006)mg/kg,which was suitable for method confirmation and quality control of clothianidin in agricultural products,helping to improve the accuracy of detection results and providing reference for uncertainty assessment of matrix standard substances related to agricultural products.
作者
张瑞华
付立斌
杨洋
羊银
胡晓楠
郭世杰
李莹
ZHANG Ruihua;FU Libin;YANG Yang;YANG Yin;HU Xiaonan;GUO Shijie;LI Ying(Tianjin Key Laboratory of Food Safety Monitoring Technology,Tianjin Institute for Food Safety Inspection Technology,Tianjin 300308,China;Jizhou District Product Quality Supervision and Inspection Institute,Tianjin 301900,China;Beijing Vocational College of Agriculture,Beijing 102442,China;Tianjin Light Industry Vocational Technical College,Tianjin 300350,China)
出处
《食品研究与开发》
2025年第18期152-156,共5页
Food Research and Development
关键词
姜粉
噻虫胺
基体标准物质
不确定度
质量控制
ginger powder
clothianidin
matrix standard substance
uncertainty
quality control
