广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2014年
12期
129-130,158
,共3页
敌敌畏%大豆%GPC%GC-MS
敵敵畏%大豆%GPC%GC-MS
활활외%대두%GPC%GC-MS
dichlorvos%soybean%GPC%GC-MS
基于凝胶渗透色谱技术( GPC)的去油酯效果,建立了气相色谱( GC)-质谱( MS)选择离子法测定大豆中的敌敌畏残留量的检测方法。样品经凝胶渗透色谱净化后,经过自动快速浓缩后直接用GC-MS进行检测并确证,最后用外标法进行定量。方法检出限为0.002 mg/kg,加标水平为0.05 mg/kg时,样品平均回收率为89%,相对标准偏差为3.1%。该方法操作简单,净化效果好,具有良好的回收率、精密度,而且检出限低,适合于日常大豆中敌敌畏残留量的检测。
基于凝膠滲透色譜技術( GPC)的去油酯效果,建立瞭氣相色譜( GC)-質譜( MS)選擇離子法測定大豆中的敵敵畏殘留量的檢測方法。樣品經凝膠滲透色譜淨化後,經過自動快速濃縮後直接用GC-MS進行檢測併確證,最後用外標法進行定量。方法檢齣限為0.002 mg/kg,加標水平為0.05 mg/kg時,樣品平均迴收率為89%,相對標準偏差為3.1%。該方法操作簡單,淨化效果好,具有良好的迴收率、精密度,而且檢齣限低,適閤于日常大豆中敵敵畏殘留量的檢測。
기우응효삼투색보기술( GPC)적거유지효과,건립료기상색보( GC)-질보( MS)선택리자법측정대두중적활활외잔류량적검측방법。양품경응효삼투색보정화후,경과자동쾌속농축후직접용GC-MS진행검측병학증,최후용외표법진행정량。방법검출한위0.002 mg/kg,가표수평위0.05 mg/kg시,양품평균회수솔위89%,상대표준편차위3.1%。해방법조작간단,정화효과호,구유량호적회수솔、정밀도,이차검출한저,괄합우일상대두중활활외잔류량적검측。
The analysis method of Gel Permeation Chromatography ( GPC) purification and Gas Chromatography -Mass Spectrometry ( GC-MS) method for the determination of dichlorvos in soybean was established.Sample was purified by GPC, and analyzed by GC -MS with external standard method for quantitative.The detection limit was 0.002 mg/kg.At the standard level of 0.05 mg/kg, the average recovery rate was 89%, with the RSD of 3.1%.The method had the advantages of simple operation , good purifying effect , high recovery rate and precision and low limit , which can be used for the determination of dichlorvos in soybean.