凝胶渗透色谱法在分析食品中多氯联苯的应用
APPLICATION OF GEL PERMEATION CHROMATOGRAPHY IN ANALYSIS OF POLYCHLORINATED BIPHENYLS FROM FOOD MATRICES
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摘要: 以凝胶渗透色谱(GPC)系统处理食品样品中的脂质,并结合碱性氧化铝柱净化,旨在建立快速有效的多氯联苯(PCBs)分析的前处理技术.对油脂样品的检测结果显示,13C标记PCBs定量内标的回收率及RSD均符合EPA1668a方法的要求,20种天然PCBs的加标回收率在71%-122%,方法精密度≤10%.Abstract: To develop a rapid pretreatment technique for determination of polychlorinated biphenyls in food, remove lipid compounds in food stuff effectively, the lipid riched foods were pretreated with gel permeation chromato graphy and then cleaned up using alkali alumina column. Oil samples were analyzed using this method. The results shown that the recovery of 13C labeled PCBs and its RSD well accorded with EPA 1668a method. The recovery of 20 native PCBs were 71%-122%,RSD≤10%.
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Key words:
- food /
- polychlorinated biphenyls /
- gel permeation chromatography /
- analytical
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