摘要
建立了凝胶色谱净化-气相色谱法测定大豆油中乐果的分析方法。样品经乙酸乙酯+环己烷(1+1)溶解,经凝胶色谱(GPC)净化,利用GC-FPD检测,外标法定量。方法检测限为0.01 mg/kg;加标水平为0.05 mg/kg时,样品平均回收率为86%,相对标准偏差为3.4%。该方法具有操作简单,快速,净化效果好,精密度高,重现性好等优点,可应用于大豆油中的乐果检测。
The analysis method of Gel Permeation Chromatography（GPC） purification and Gas Chromatographic method for the determination of soybean oil in dimethoate was established.Sample was dissolved by ethyl acetate ＋cyclohexane（1＋1）,and was purified by GPC,using GC-FPD to detect,and with external standard method for quantitative.The detection limit was 0.01 mg/kg,standard level was 0.05 mg/kg,the average recovery rate was 86%,and the relative standard deviation was 3.4%.The method had the advantages of simple operation,rapid,good purifying effect,high precision,good reproducibility,and can be used for the detection of dimethoate in soybean oil.
出处
《广州化工》
CAS
2012年第10期126-127,138,共3页
GuangZhou Chemical Industry
关键词
GPC
气相色谱
大豆油
乐果
GPC
gas chromatographic
soybean oil
dimethoate
