三重四级杆气相色谱-质谱联用仪测定土豆中甲基立枯磷过程中测量不确定度的评定  

Uncertainty Evaluation for Determination of Tolclofos-methyl in Potato by Triple Quadrupole GC-MS

作　　者：陈煜 何莉媛 廖菲 王洪健[1,2,3] CHEN Yu;HE Liyuan;LIAO Fei;WANG Hongjian(Guangdong Provincial Public Laboratory of Food Industry,Guangzhou 511442,China;Guangdong Food Industry Institute Co.,Ltd.,Guangzhou 511442,China;Guangdong Food Quality Supervision and Inspection Station,Guangzhou 511442,China;Guangdong Food Industry Institute Co.,Ltd.Hunan Branch,Changsha 410006,China)

机构地区：[1]广东省食品工业公共实验室,广东广州511442 [2]广东省食品工业研究所有限公司,广东广州511442 [3]广东省食品质量监督检验站,广东广州511442 [4]广东省食品工业研究所有限公司湖南分公司,湖南长沙410006

出　　处：《海南师范大学学报（自然科学版）》2020年第2期136-142,共7页Journal of Hainan Normal University（Natural Science）

基　　金：广东省科技计划项目(2015A040404041,2015B070701030)。

摘　　要：食用农产品中药物残留超标严重危害人体健康,更加精准地检测出药物残留量,能有效减少不合格产品进入食品流通环节。文章参照GB 23200.8-2016《食品安全国家标准水果和土豆中500种农药及相关化学品残留量的测定气相色谱-质谱法》,采用三重四级杆-气质联用仪测定土豆中甲基立枯磷的残留量,并评定检测过程的测量不确定度。该确立不确定度分析模型时,系统地分析了不确定度的来源,并量化各个来源引入的相对标准不确定度,得到整个检测过程中的相对不确定度(±0.002 mg/kg,k=2)。通过对三重四级杆-气质联用仪测定甲基立枯磷相对不确定度并进行评定,探讨影响检测结果的主要因素,为日后有效地提高检测的准确度提供可靠依据。Excessive drug residues in edible agricultural products seriously endanger human health.More accurate detection for drug residues could effectively reduce the unqualified products into food circulation.In this paper,according to GB 23200.8-2016"National food safety standard-Determination of 500 pesticides and related chemicals residues in fruits and vegetables by Gas chromatogram-mass spectrometry",triple quadrupole GC-MS was used to detect the residual amount of tolclofos-methyl in potato,and the measurement uncertainty was evaluated for the determination.A measurement uncertainty analysis model was established for the determination of tolclofos-methyl,to analyze the sources of uncertainty in the detection process,quantify the relative standards introduced by each source uncertainty,and get the relative uncertainty in the whole experiment(±0.002 mg/kg,k=2).By measuring and evaluating the relative uncertainty of relative determination of tolclofos-methyl with triple quadrupole GC-MS,the main factors affecting the test results are discussed to provide a reliable basis for effectively improving the accuracy of the test in the future.

关 键 词：甲基立枯磷 测量不确定度 三重四级杆-气质联用仪 

分 类 号：R155.5[医药卫生—营养与食品卫生学]