气相色谱法测定代用茶中三氯杀螨醇残留量的不确定度评定  

Evaluation of Uncertainty for Gas Chromatography Determination of Dicofol Residues in Alternative Teas

作　　者：原超 YUAN Chao(Changzhi General Inspection and Testing Centre,Changzhi 046000,China)

机构地区：[1]长治市综合检验检测中心,山西长治046000

出　　处：《食品安全导刊》2023年第16期112-114,共3页China Food Safety Magazine

摘　　要：采用气相色谱法测定代用茶中的三氯杀螨醇残留量,分析评定影响测量的各不确定度分量,得出合成与扩展不确定度。当代用茶样品中三氯杀螨醇残留量为0.542 mg·kg^(-1)时,扩展不确定度为0.029 mg·kg^(-1)(k=2),其中标准曲线拟合分量与测量重复性分量的相对贡献较大,检验检测机构应重视仪器维护与人员培训工作。The residual dicofol in alternative tea was determined by gas chromatography.The uncertainty components affecting the measurement were analyzed and evaluated,and the uncertainty of synthesis and expansion were obtained.When the residual amount of dicofol in contemporary tea samples is 0.542 mg·kg^(-1),the extended uncertainty is 0.029 mg·kg^(-1)(k=2).The relative contribution of the standard curve fitting component and the measurement repeatability component is greater.Therefore,inspection and testing institutions should pay more attention to the maintenance of instruments and personnel training.

关 键 词：气相色谱法 代用茶 三氯杀螨醇 不确定度 

分 类 号：TS272.7[农业科学—茶叶生产加工] O657.71[轻工技术与工程—农产品加工及贮藏工程]