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以前,从肉品中萃取多环芳烃(PAHs)的方法,时间长、需用材料多、萃取溶剂消耗量大,而且在萃取后还需要进一步净化。本法是基于PAH_s更易溶于碳酸丙烯酯,用碳酸丙烯酯从肉品中萃取PAH_s时,还可以除去脂肪,从而能快速地净化与制备出萃取液。本法操作如下: 先将样品磨细,称取100或200克,置于一铝质容器(1.5升)内,加入等容积(100或200毫升)氯仿,使用家用食品混合器等器具将内容物加以搅拌,然后加入重量为肉品一半的无水硫酸钠(经500℃烤过3小时),用匀浆器搅3分钟即可达到均匀,此时样品中的脂肪最大量地溶于
In the past, polyaromatic hydrocarbons (PAHs) were extracted from meat products for a long time, requiring a large amount of materials and consuming a large amount of extraction solvent, and were further purified after extraction. This method is based on the PAH_s more soluble in propylene carbonate, propylene carbonate extracted from the meat PAH_s, but also can remove fat, which can quickly purify and prepare the extract. This method is as follows: First, the sample is finely ground, weighed 100 or 200 grams, placed in an aluminum container (1.5 liters), adding an equal volume (100 or 200 ml) of chloroform, the use of household food mixers and other equipment content The mixture is stirred and then anhydrous sodium sulfate (500 ° C for 3 hours) weighing half the meat is added and homogenized with a homogenizer for 3 minutes, at which point the fat in the sample is dissolved in the maximum amount