摘要
目的:建立了食用油中邻苯二甲酸酯的GC-MS测定方法。方法:样品用乙腈提取,经SILICA/PSA玻璃混合型固相萃取柱净化后,用GC-MS测定,定性离子丰度比定性,外标法定量。结果:标准曲线的相关系数在0.997～0.999之间,方法的检出限在0.02 mg/kg～0.05 mg/kg之间,加标回收率实验在74.9%～119.5%之间,相对标准偏差在2.32%～6.87%之间。结论:该方法具有操作简单、准确度和精密度好等优点,可适用于食用油中邻苯二甲酸酯类物质的检测。
Objective：The method for the simultaneous determination of 16 phthalate acid esters （PAEs） in edi- ble oil was established by gas chromatography- mass spectrometlT （GC -MS）. Methods： The sample was extrac- ted with acetonitrile, then purified by SILICA/PSA SPE kit, finally detected by GC - MS. Characterization of ion a- bundance ratios of qualitative was used for qualitative analysis and the external standard method for quantitation. Re- sults： The correlation coefficient of the standard curve was O. 997 - 0. 999, the detection limits ranged from 0.02 mg/kg to 0.05 mg/kg. The average spiked recoveries were in the range of 74.9% - 119.5%. The raletive standard deviation of precision was from 2.32% to 6.87%. Conclusion： The method is simple, accurate and relia- ble. It can be applicable to determination of phthalate acid esters in edible oil.
出处
《中国卫生检验杂志》
北大核心
2013年第2期304-306,共3页
Chinese Journal of Health Laboratory Technology
