微波辅助萃取/气相色谱-质谱法同时测定纸质食品接触材料中18种多环芳烃  

Simultaneous Determination of 18 Polycyclic Aromatic Hydrocarbons in Paper Packaging Materials Contacting with Foodstuffs Using Gas Chromatography-Mass Spectrometry / Selected Ion Monitoring Technique Coupled with Microwave Assisted Extraction

作　　者：王成云[1] 褚乃清[1] 谢堂堂[1] 麦家超[1] 李丽霞[1] 

机构地区：[1]深圳出入境检验检疫局工业品检测技术中心,广东深圳518067

出　　处：《分析测试学报》2013年第12期1453-1459,共7页Journal of Instrumental Analysis

基　　金：国家认监委制标项目(2011B431)

摘　　要：建立了同时测定纸质食品接触材料中18种禁用多环芳烃的气相色谱-质谱/选择离子监测方法。以二氯甲烷-正己烷（1∶1）为提取溶剂,在90℃下微波辅助萃取纸质食品接触材料中的多环芳烃,提取液经二甲亚砜萃取、环己烷反萃取、硅胶固相萃取柱净化后,进行气相色谱-质谱/选择离子监测分析,外标法定量。各组分的检出限为0.1~1.0μg/kg,相关系数均大于0.997,加标回收率为56.3%~95.4%,相对标准偏差均小于7%。该方法简便快捷、灵敏度高、定性定量准确,适用于纸质食品接触材料中多环芳烃的同时测定。An effective method was established for the simultaneous determination of 18 banned polycyclic aromatic hydrocarbons（ PAHs） in paper packaging materials contacting with foodstuffs by gas chromatography- mass spectrometry / selected ion monitor technique（ GC / MS- SIM） coupled with microwave assisted extraction（ MAE）. PAHs in samples were extracted by MAE at 90 ℃ using dichloromethane- hexane（1∶1） as extraction solvent. The extract was firstly extracted with dimethyl sulfoxide,then reversely extracted with cyclohexane,followed by purification of silica solid phase extraction column. The analysis of targeted compounds was performed by GC- MS / SIM with the external standard method. The calibration curves were linear in the certain concentration with correlation coefficients more than 0. 997. The detection limits varied from 0. 1 μg / kg to 1. 0 μg / kg. The average spiked recoveries ranged from 56. 3% to 95. 4% with relative standard deviations（ RSDs） all less than 7%. The proposed method was simple,rapid,sensitive and accurate,and was suitable for the analysis of PAHs in paper packaging materials contacting with foodstuffs.

关 键 词：多环芳烃 纸质食品接触材料 微波辅助萃取 气相色谱 质谱-选择离子监测法 

分 类 号：O657.63[理学—分析化学] O625.15[理学—化学]