纸质食品接触材料的多环芳烃气相色谱/质谱-选择离子监测法测定  

Determination of polycyclic aromatic hydrocarbons in paper packaging materials intended to come into contact with foodstuffs by gas chromatography/mass spectrometry-selected ion monitor technique

作　　者：王成云[1] 杨左军[1] 徐嵘[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：《中华纸业》2014年第4期15-20,共6页China Pulp & Paper Industry

基　　金：国家认监委制标项目(2011B431)

摘　　要：建立了一个气相色谱/质谱-选择离子监测方法，对纸质食品接触材料中18种禁用多环芳烃进行了同时测定，该方法以正己烷/丙酮（1∶1）为提取溶剂，40℃下超声提取纸质食品接触材料中的多环芳烃，提取产物经硅胶固相萃取柱净化后进行气相色谱/质谱-选择离子监测法测定，外标法定量。在S/N=3的条件下，各目标化合物的检出限为0.1～1.0μg/kg。方法的加标平均回收率为55.98～95.62%，相对标准偏差为2.87～6.98%，线性相关系数均大于0.997。该方法快速简便，定性准确，检出限低，可完全满足多环芳烃检测的技术要求，可用于食品接触材料中18种禁用多环芳烃的同时测定。采用该方法对市售食品接触材料进行测试，结果在米黄色再生包装纸袋中检出高含量的菲。An effective gas chromatography/mass spectrometry-selected ion monitoring method was established for the simultaneous determination of the contents of 18 kinds of banned polycyclic aromatic hydrocarbons （PAHs） in paper packaging materials intended to come into contact with foodstuffs. PAHs in paper packaging materials intended to come into contact with foodstuffs were ifrst ultrasonically extracted at 40℃, using hexane/acetone （1：1） as the extraction solvent, then the extract was purified by silica solid phase extraction column, followed by the analysis of gas chromatography/mass spectrometry-selected ion monitor technique. The concentration of each analytes was calibrated by external standard method. The detection limits changed from 0.1μg/kg to 1.0μg/kg at the condition of signal to noise （S/N） of 3. The spiked average recoveries varied from 55.98% to 95.62% while the relative standard deviation （RSD） changed from 2.87% to 6.98%. At the same time, the coefficients were all larger than 0.997. The proposed method was simple, rapid, accurate and sensitive, and could satisfy completely the demand of the analysis of PAHs in paper packaging materials intended to come into contact with foodstuffs. This method was applied to the simultaneous determination of PAHs in commercially available paper packaging materials intended to come into contact with foodstuffs and phennanthrene of high content was detected in a warm beige regenerated packing bag.

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

分 类 号：TS77[轻工技术与工程—制浆造纸工程]