GC-MS/MS法测定苹果中乙螨唑含量的不确定度评定
Evaluation of Uncertainty for the Determination of Etoxazole in Apple by GC-MS/MS
张丹丹 1李国辉 2唐德红 1李梅1
作者信息
- 1. 遵义市产品质量检验检测院,贵州 遵义 563000
- 2. 遵义师范学院 化学化工学院,贵州 遵义 563006
- 折叠
摘要
采用气相色谱-串联质谱法测定苹果中乙螨唑残留量,并分析和量化测定过程中引入的不确定度.结果发现,当苹果中乙螨唑含量为 0.097 5 mg·kg-1 时,扩展不确定度为 0.007 2 mg·kg-1,k=2.乙螨唑测定结果的不确定度主要来源于试剂标准工作溶液配制和基质工作溶液配制,提示相关人员应选择合适的量具,减小实验室环境温差波动,提高测定结果的准确性.
Abstract
Gas chromatography-tandem mass spectrometry was used to determine the residual content of etoxazole in apples,and the uncertainty introduced during the measurement process was analyzed and quantified.The results showed that when the content of etoxazole in apples was 0.097 5 mg·kg-1,the expanded uncertainty was 0.007 2 mg·kg-1,k=2.The uncertainty of the determination results of etoxazole mainly comes from the preparation of reagent standard working solution and matrix working solution.It is suggested that relevant personnel should choose appropriate measuring tools to reduce temperature fluctuations in the laboratory environment and improve the accuracy of the measurement results.
关键词
气相色谱-串联质谱法/苹果/乙螨唑/不确定度/评定Key words
gas chromatography-tandem mass spectrometry/apple/etoxazole/uncertainty/evaluate引用本文复制引用
基金项目
遵义市科技计划项目(遵市科合HZ字[2023]1号)
遵义市科技计划项目(遵市科合HZ字[2023]160号)
遵义师范学院博士基金(遵师BS[2020]13号)
出版年
2024
NETL
NSTL
万方数据