气相色谱单柱法测定新会柑果皮中三唑磷农药残留的不确定度评定  

Uncertainty Evaluation for Determination of Triazophos Residues in Xinhui Citrus Peel by Gas Chromatography Single-column Method

作　　者：熊文明 周敏瑜 皮小弟 Xiong Wenming;Zhou Mingyu;Pi Xiaodi(Guangdong Jiangmen Chinese Medical College,Jiangmen 529000,China)

机构地区：[1]广东江门中医药职业学院,广东江门529000

出　　处：《广东化工》2024年第13期106-109,共4页Guangdong Chemical Industry

基　　金：江门市科技计划项目(133);广东省普通高校工程技术中心(2022GCZX023)。

摘　　要：目的:评定气相色谱单柱法测定新会柑果皮中三唑磷农药残留的不确定度。方法:建立计算模型,分析和计算农药残留测量结果的不确定度分量,得出农药残留量的不确定度。结果:当新会柑果皮三唑磷残留量为1.25mg/kg,其扩展不确定度为0.52mg/kg(置信因子k=2)。结论:标准系列曲线拟合过程是影响该方法不确定度的主要因素,其次样品的前处理对不确定度产生的影响也较大。因此,在新会柑果皮的三唑磷农药残留测定中,应从这两个方面加以重视,以提高准确性。Objective:To evaluate the uncertainty of Gas chromatography in the determination of triazophos pesticide residues in citrus peel of Xinhui District.Methods:The uncertainty components of pesticide residues were analyzed and calculated by establishing a calculation model,and the uncertainty of pesticide residues was obtained.Results:When the residue of triazophos in Xinhui District peel was 1.25 mg/kg,the expanded uncertainty was 0.52 mg/kg(confidence factor k=2).Conclusion:The fitting process of standard series curve is the main factor affecting the uncertainty of this method,and the pretreatment of samples has a greater impact on the uncertainty.Therefore,the determination of triazophos pesticide residues in Xinhui District orange peel should pay attention to these two aspects in order to improve the accuracy.

关 键 词：气相色谱法 新会柑果皮 农药残留 不确定度 

分 类 号：TB99[一般工业技术—计量学]