QuEChERS提取-气相色谱法测定木棉花中有机磷类残留  

Sample pretreatment of QuEChERS and Determination of 9 kinds of pesticides residues in kapok flower by gas chromatography spectrometry

作　　者：赵冬梅[1] 

机构地区：[1]中山职业技术学院,广东中山528400

出　　处：《福建分析测试》2014年第6期22-25,共4页Fujian Analysis & Testing

基　　金：中山市科技计划项目(2013A3FC0302);中山职业技术学院科研项目(2013KQ21)

摘　　要：建立同时测定木棉花中9种有机磷农药的QuEChERS提取-气相色谱快速检测方法。样品经乙腈溶解，QuEChERS试剂萃取，分散固相萃取净化后，气相色谱-火焰光度检测器检测，在优化条件下，结果显示：9种农药均具有良好的线性关系，相关系数不低于0．995，检出限为0．012～0．316mg／kg，加标回收率为81．6％～103．4％，相对标准偏差为1．6％～4．8％。该方法具有检测结果准确可靠、简便快速等优点。A GC method for determination of 9 pesticide residues in kapok flower was developed. The pesticides in samples was extracted with acetonitrile and cleaned up with QuEChERS extraction, and then detected by gas chromatography-NPD. The calibration curves for 9 pesticide residues all had good linear relationships with correlation coefficients not less than 0.995. The spiked recoveries were ranged from 81.6% to 103.4 with relative standard deviations of 1.6%～4.8%. The limits of detection were in the range of 0.012～0.316 mg/kg. It was an effective method which fit for the pesticide residues analysis and has high accuracy, precision and sensitMty.

关 键 词：QUECHERS 气相色谱 木棉花 农残 

分 类 号：TQ450.2[化学工程—农药化工]