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- Title
气相色谱-质谱法测定葡萄酒用软木塞中2,4,6-三氯苯甲醚的不确定度评定.
- Authors
秦燕飞; 孙建平; 任艳文; 梁蒙; 陈佳威
- Abstract
Uncertainty analysis was performed for the determination of releasable 2,4,6-trichloroanisole in cork used for wine by solid phase microextraction(SPME) and GC-MS. Based on CNAS-GL006:2019 Guidelines for the evaluation of uncertainty in chemical analysis and JJF 1059.1—2012 Evaluation and representation of measurement uncertainty, the mathematical model of uncertainty evaluation was constructed, the sources of uncertainty were analyzed, and the components were quantified and synthesized. The evaluation results showed that the uncertainty mainly came from the preparation process of standard solution series, followed by the additive process of internal standard substance. Furthermore, when the migration amount of 2,4,6-trichloroanisole in the cork was 2.04 ng/L, its extended uncertainty was 0.26 ng/L (k=2).
- Subjects
ANALYTICAL chemistry; UNCERTAINTY; MATHEMATICAL models; WINES; EPISTEMIC uncertainty; GUIDELINES; CORK
- Publication
China Brewing, 2020, Vol 39, Issue 11, p163
- ISSN
0254-5071
- Publication type
Article
- DOI
10.11882/j.issn.0254-5071.2020.11.031