固相萃取-气相色谱法检测4种植物源食品中莠灭净的残留量  

Determination of Ametryn Residue in Four Plant-derived Foods by Gas Chromatography Coupled with Solid Phase Extraction

作　　者：王玉健[1] 黄惠玲[1] 江林娟[2] 卓海华[1] 刘红专[1] 

机构地区：[1]海南出入境检验检疫局技术中心,海南海口570311 [2]海南大学儋州校区食品学院,海南儋州571737

出　　处：《食品科学》2010年第14期182-185,共4页Food Science

基　　金：全国进出口食品安全检测标准化技术委员会资助项目(20073758-T-424)

摘　　要：为建立植物源食品中莠灭净残留量的气相色谱检测法,样品以乙腈为提取溶剂,提取液以ENVI-Carb/NH2柱净化,乙腈-甲苯(7:2,V/V)洗脱,以气相色谱-火焰光度(GC-FPD,S型滤光片)检测,外标法定量。结果表明,该方法的检出限为0.01mg/kg,实际检测大米、苹果、香蕉、茄子样品时,平均添加回收率在88.0%～100.0%之间,相对标准偏差在3.71%～11.71%之间。该方法灵敏度、精密度高,重复性好,回收率稳定,具有较强的适用性。A method using solid phrase extraction （SPE） followed by gas chromatography with flame photometric detection （GC-FPD,S-type filter） has been developed for determining ametryn residue in 4 plant-derived foods.Samples were extracted and cleaned up on an ENVI-Carb/NH2 column using acetonitrile/toluene （7：2） as elution solvent.The quantification method employed was external standard method.Under the selected analytical conditions,the detection limit was 0.01 mg/kg.Average recovery rates for the analyte in rice,apple,banana and eggplant spiked at 3 levels ranged from 88.0% to 100.0% with relative standard deviations （RSD） from 3.71% to 11.71%.This method is sensitive,precise and reproducible and has stable recovery.These figures of merit demonstrate its good applicability.

关 键 词：莠灭净 植物源食品 残留 气相色谱-火焰光度检测器 S型滤光片 

分 类 号：O657.75[理学—分析化学] TS207.3[理学—化学]