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当前位置: 首页 > 文章 > 气相色谱法测定大米粉中氰戊菊酯残留量的不确定度评定 现代农业科技 2010 (19) 323-324+326
Position: Home > Articles > The Uncertainty Evaluation of Fenvalerate Residues’ Determination in Rice by Gas Chromatography Modern Agricultural Science and Technology 2010 (19) 323-324+326

气相色谱法测定大米粉中氰戊菊酯残留量的不确定度评定

作  者：
王蓓;张心明;王姣;迟志娟;钱和
单  位：
江苏省太仓市农产品质量监督检验测试中心;江南大学食品学院
关键词：
气相色谱法;大米粉;氰戊菊酯;残留;不确定度
摘  要：
大米粉试样先用石油醚提取,提取溶液经离心、浓缩后,用正己烷定容,经毛细管柱分离后用电子捕获检测器(ECD)检测。同时,建立了测定大米粉中氰戊菊酯残留量的相应数学模型,对数学模型中各种不确定因素进行量化处理。对各不确定度分量进行合成和扩展,得到大米粉中氰戊菊酯残留量的扩展不确定度为(1.859±0.375)mg/kg。结果表明:标准溶液和其配制过程、温度效应及测量随机性因素是主要不确定度来源。
译  名：
The Uncertainty Evaluation of Fenvalerate Residues’ Determination in Rice by Gas Chromatography
作  者：
WANG Bei 1,2 ZHANG Xin-ming 1 WANG Jiao 1 CHI Zhi-juan 1 QIAN He 2(1 The Supervision,Inspection & Testing Center of Agricultural Quality& Security,Taicang Jiangsu 215400;2 College of Food Science,Southern Yangtze University)
关键词：
gas chromatograph;rice;fenvalerate;residue;uncertainty
摘  要：
Rice samples were first extracted by petroleum ether,then was dissolve by n-hexane after centrifugation and concentration.After the separation by capillary column,the samples were tested by electronic capture detector(ECD).At the same time,mathematical model of uncertainty evaluate of fenvalerate residues in rice by GC was established,and uncertainty factors in the mathematics model were quantified.The combined standard uncertainty and expanded uncertainty were calculated,then the uncertainty of fenvalerate residue’s determination im rice was figured out,which was(1.859±0.375) mg/kg.The result indicated that standard solution and its preparation process,temperature effect and measuring random factors were the main sources of uncertainty.

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