食品科学

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气相色谱法和气相色谱-质谱法测定茶叶中联苯菊酯的不确定度评定

王吉祥,张学忠,王亚琴,牛之瑞,冯 雷,赵 昱   

  1. 云南省产品质量监督检验研究院,云南 昆明 650223
  • 出版日期:2014-06-25 发布日期:2014-07-03

Uncertainty Evaluation for the Determination of Bifenthrin in Tea by Gas Chromatography and Gas Chromatography-Mass Spectrometry

WANG Ji-xiang, ZHANG Xue-zhong, WANG Ya-qin, NIU Zhi-rui, FENG Lei, ZHAO Yu   

  1. Yunnan Product Quality Supervision and Testing Academy, Kunming 650223, China
  • Online:2014-06-25 Published:2014-07-03

摘要:

通过气相色谱法和气相色谱-质谱法测定茶叶中的联苯菊酯,对测定过程中可能引入的不确定度进行了分析和评定。根据JJF 1059—1999《测量不确定度评定与表示》中有关规定,建立了不确定度评定的数学模型,对各分量在构成合成不确定度时的影响率进行分析,得出不确定度控制的关键在于控制好样品的前处理和标准曲线。

关键词: 气相色谱法, 气相色谱-质谱法, 联苯菊酯, 不确定度, 茶叶

Abstract:

The possible uncertainties in the determination of bifenthrin in tea by gas chromatography (GC) and gas
chromatography-mass spectrometry (GC-MS) were analyzed and evaluated. According to Evaluation and Expression
of Uncertainty in Measurement (JJF 1059—1999), a mathematical model of uncertainty was established. Based on the
contribution ratio of each uncertainty component to the synthetic uncertainty, the key uncertainties resulted from sample
pretreatment and calibration curve preparation.

Key words: gas chromatography (GC), gas chromatography-mass spectrometry (GC-MS), bifenthrin, uncertainty, tea

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