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本文报导了一个测定水果和蔬菜中十八种有机磷农药及其七种代谢产物的气液色谱法。该法快速、高效、灵敏而且试剂又便宜。提取与纯化:将50 g样品切碎用80 ml丙酮浸渍3分钟。浸液用70 ml正己烷分二次提取非极性的、再用300 ml醋酸乙酯分三次提取极性的有机磷农药。正己烷提取液经13 g弗罗里硅藻土柱纯化后,再于40℃下真空浓缩至5 ml;醋酸乙酯提取液不需纯化,经KD浓缩器中挥发至5～10ml就可直接进样。
This paper reports a gas-liquid chromatogram for the determination of 18 organophosphorus pesticides and their seven metabolites in fruits and vegetables. The method is fast, efficient, sensitive and reagents are cheap. Extraction and Purification: 50 g samples were minced and soaked in 80 ml acetone for 3 minutes. Dip extract with 70 ml of n-hexane twice to extract apolar, and then three times with 300 ml of ethyl acetate to extract polar organophosphorus pesticides. The hexane extract was purified by 13 g Florisil column and then concentrated to 5 ml at 40 ° C in vacuo. The ethyl acetate extract was used without further purification and was evaporated to 5 - 10 ml with a KD concentrator Injection.