摘要
本文采用固相萃取-气相色谱配电子捕获检测器法(SPE-GC/ECD),建立了绿豆中7种农药(毒死蜱、三氯杀螨醇、甲氰菊酯、氟氯氰菊酯、氯氰菊酯、氰戊菊酯、溴氰菊酯)多残留的简单快速测定方法,检出限1.6~4.2μg/kg,在0.005~0.5μg/mL范围内线性关系良好,r在0.9978~0.9998间,在0.055、0.100、0.205μg/mL 3个添加浓度水平上平均回收率在89.5~122.4%,精密度(RSD)为2.68~9.61%。本方法能够减少复杂样品基质的背景干扰,操作简单,分析成本低,检测结果灵敏、可靠,适用于日常工作中大批量出口绿豆农残检测。
A simple and rapid analytical determination method was established for pesticides multi-residues in vigna radiate by solid phase extraction GC-ECD.The detection limites of this method were in the range of 1.6~4.2μg/kg,the linear ranges of the 7 pesticides were from 0.005 to 0.5μg/mL with the regression coefficient(r) of 0.9978~0.9998.At 0.055,0.100,0.205μg/mL,three spiked concentration levels,the average recoveries and relative standard deviations(RSD) of the 7 kinds of pesticide were 89.5% to 122.4% and 2.68% to 9.61% respectively.The method is sensitive and accurate,which can eliminate the interference from other complex ingredients completely.This method is applicable to analyze these pesticides residues in export vigna radiate samples.
出处
《检验检疫学刊》
2010年第5期26-28,37,共4页
Journal of Inspection and Quarantine