摘要
建立了甘蔗中13种除草剂的气相色谱-质谱(GC-MS)多残留检测方法。甘蔗样品用乙腈提取,经QuEChERS方法净化后,采用GC-MS进行分析检测,在选择离子模式(SIM)下,外标法定量,线性关系良好(R2〉0.998),检出限为0.71-3.17μg/kg。分别在样品中添加不同加标水平(10、20、100μg/kg)的13种除草剂标准溶液,进行标准添加回收率实验,方法回收率为85.4%-105.5%,相对标准偏差为1.9%-9.1%(n=6)。该方法前处理简单快捷、节省溶剂,灵敏度、准确度、精密度均符合农药残留检测要求,适用于甘蔗中除草剂多残留检测。
A method was developed for the determination of 13 herbicide pesticide residues in sugarcane by gas chromatographmass spectrometry( GC-MS).The residues in the sugarcane were extracted by acetonitrile,cleaned up by developed QuEChERS method and then analyzed by using GC-MS in selecting ion mode( SIM).External standard method was used to determine the residue contents with a good linear relationship( R2 0. 998).The limits of detection( LOD) were 0. 71 - 3. 17 μg/kg.The recoveries of 13 herbicide pesticide residues at three levels of 10,20 and 100 μg/kg were from 85. 4% to 105. 5% with the relative standard deviations( RSDs) of 1. 9% - 9. 1%( n = 6) in sugarcane.The method is simple,reproducible,solvent saving,acceptable sensitivity and accuracy to meet the requirements of the pesticide residues analysis.This developed procedure is suitable for the determination of herbicide pesticide residues in sugarcane.
作者
黄敏兴
高裕锋
甄振鹏
庞扬海
王小鹏
余构彬
郭剑雄
HUANG Min-xing;GAO Yu-feng;ZHEN Zhen-peng;PANG Yang-hai;WANG Xiao-peng;YU Gou-bin;GUO Jian-xiong(China Sugar Inspection Center,Guangdong Key Lab of Sugarcane Improvement and Biorefinery,Guangdong Bioengineering Institute(Guangzhou Sugarcane Industry Research Institute),Guangzhou 510316,China)
出处
《化学试剂》
CAS
北大核心
2018年第8期759-762,766,共5页
Chemical Reagents
基金
广东省科技计划项目(2013B040400003,2013B-061800023,2013B061800007,2014B040404054,2016A040-403066)
广东省科学院项目(2016GDASPT-010)