For the detection of haloxyfop-P-methyl and haloxyfop-ethoxyethyl in edible vegetable oils, with rapeseed oil and edible blend oil as the object of the research, the method for determination of haloxyfop-P-methyl and haloxyfop-ethoxyethyl in edible vegetable oils was established by gas chromatography-mass spectrometry (GC-MS). The sample was extracted in acetonitrile by vortex extraction and purified by SPEs. GC-MS was used for determination with external standard method applied for quantification. The results show that in a range of 10-5000μg/L, haloxyfop-P-methyl and haloxyfop-ethoxyethyl have a good liner relationship (r>0.9995) with method detection limit respectively being 1.0μg/kg and 1.4μg/kg and quantitation limit being 3.3μg/kg and 4.5μg/kg. Under the adding range of 20-1000μg/kg, the recovery rate ranges from 95% to 110% and relative standard deviation(RSD) of the precision test is within 5%. Thus the method is applicable to qualitative and quantitative determination of haloxyfop-P-methyl and haloxyfop-ethoxyethyl in edible vegetable oils.%为检测食用植物油中高效氟吡甲禾灵和吡氟甲禾灵残留量,以菜籽油、食用调和油为研究对象,建立食用植物油中高效氟吡甲禾灵和吡氟甲禾灵的气相色谱-质谱联用仪测定方法.样品经乙腈涡旋萃取,PAEs检测玻璃萃取管净化,用气相色谱-质谱联用仪测定,外标法定量.结果表明:高效氟吡甲禾灵和吡氟甲禾灵在10~5000μg/L范围内具有良好的线性关系(r>0.9995),方法检出限分别为1.0,1.4μg/kg,定量限分别为3.3,4.5μg/kg.在20~1000μg/kg的添加水平,高效氟吡甲禾灵和吡氟甲禾灵的回收率在95%~110%之间,方法精密度试验的相对标准偏差在5%以内.该方法适用于食用植物油中高效氟吡甲禾灵和吡氟甲禾灵的定性和定量测定.
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