食品中邻苯二甲酸酯测定方法的优化

发布时间：2018-03-11 10:19

本文选题：邻苯二甲酸酯　切入点：油脂食品　出处：《中国食品添加剂》2017年01期 　论文类型：期刊论文

【摘要】：建立了分散固相萃取测定食品中18种邻苯二甲酸酯类化合物(PAEs)的方法。纯油脂样品采用正己烷饱和乙腈提取净化;油脂含量较低的食品,采用10%叔丁基甲醚-乙腈溶液提取;提取液经相应的分散固相萃取管净化后,气相色谱-质谱联用仪进行测定。确定了纯油脂和低油脂食品中PAEs的测定方法,16种PAEs检出限达到1.5 mg/kg,DIDP/DINP检出限为9.0 mg/kg。纯油脂样品回收率80%~110%,RSD6.5%,低油脂样品回收率60%~90%,RSD8.4%。另外对蒸馏酒的测定方法进行了改进,以提高方法的稳定性,回收率为90%~110%,RSD5.2%。本方法对前处理设备要求低,试剂消耗量小,方法简单易操作,适用于日常检测工作。
[Abstract]:A method for the determination of 18 phthalate esters in food by dispersive solid phase extraction (SSPE) was established. The pure oil samples were extracted and purified by n-hexane saturated acetonitrile, and the foods with lower oil content were extracted by 10% tert-#china_person0# methyl ether-acetonitrile solution. After purification of the extract by the corresponding dispersed solid-phase extraction tube, Gas chromatography-mass spectrometry (GC-MS) was used to determine PAEs in pure and low-fat foods. 16 PAEs detection limits of 1.5 mg / kg DIDP / DINP were determined. The detection limit of DIDP / DINP was 9.0 mg / kg / kg. The recovery rate of pure oil sample was 80% and that of low fat sample was 6090 mg / kg. The determination method of distilled liquor was improved. In order to improve the stability of the method, the recovery rate is 90% and 110% RSD 5.2. The method has the advantages of low requirements for pretreatment equipment, small reagent consumption, simple and easy to operate, and suitable for daily detection.
【作者单位】：苏州出入境检验检疫局;苏州世标检测技术有限公司;
【分类号】：O657.63;TS207.3

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