液相色谱串联质谱法测定香蕉中噻虫胺残留量的不确定度评定

打开文本图片集

Uncertainty Evaluation for Determination of Clothianidin Residue in Banana by Liquid Chromatography-Tandem Mass Spectrometry

AN Shuangdi， LUO Shuwen，LI Yanyan， QI Dieming， LI Zetao （Lanzhou Zhongjianke Testing Technology Co.，Ltd.，Lanzhou 73ooo0， China）

Abstract： The content of clothianidin in banana was determined by liquid chromatography-tandem mass spectrometry. According to the determination process， a series of uncertain factors such as sample weighing， standard solution preparation， curve fiting，sample processing and repeatability test were analyzed，and the uncertainty was systematically evaluated.The results showed that the content of clothianidin residue in banana was 0.042 6mg⋅kg-1 ， and the expanded uncertainty was 0.0026mg⋅kg-1 0 k=2 .Theuncertainty mainly came fromcurve fiting and sample repeated measurement. This study provides a scientific basis for improving the accuracy and reliability of the determination results of clothianidin residue in banana.

Keywords： banana; clothianidin; uncertainty; liquid chromatography-tandem mass spectrometry

噻虫胺是一种新烟碱类杀虫剂，具有高效、广谱、内吸性强等特点，广泛应用于农业生产中以防治多种害虫。（剩余4288字）