自动固相微萃取-气相色谱-质谱法测定食品接触材料中多环芳烃(PAHs)的迁移量

多环芳烃具有致癌性、致畸性及致突变性，为了快速、高效、绿色的检测食品接触材料中多环芳烃(PAHs)的迁移量，建立了自动固相微萃取-气相色谱-质谱联用（GC/MS）测定水和3%乙酸食品模拟液中16种多环芳烃迁移量的分析方法。对固相微萃取时间、萃取温度、解吸时间、振荡速率和离子强度等萃取条件进行了优化，并进行了方法的线性范围、检出限、回收率、精密度等实验。结果表明：方法的线性范围在0.01~5.0 μg/L之间；相关系数在0.997 9～0.999 7之间；模拟物中16种多环芳烃的回收率为73.47%～117.6%；相对标准偏差（n=5）在2.72%～14.70%之间。本方法适应于食品接触材料中16种多环芳烃的迁移量检测。

Determination of Polycyclic Aromatic Hydrocarbons(PAHs) Migrated from Food Contacting Materials by Automated Solid Phase Microextracion with GC/MS

Polycyclic aromatic hydrocarbons(PAHs) have carcinogenic, teratogenic, mutagenic. The method of rapid, efficient and green to detect the amount of migration of PAHs in water food simulations and 3% acetic acid food was developed by chromatography-mass spectrometry (GC/MS) using an automated solid phase microextraction (SPME). Under optimizing extraction conditons, such as extraction time, extraction temperature, desorption time, agitation speed and ion strength, good linearity, recovery and precision were obtained. The linearity range is in the range of 0.01—5.0 μg/L. The linearity correlation coefficients of 16 kinds of PAHs are between 0.997 9 and 0.999 7. The average recovery and RSDs are 73.47%—117.6% and 2.72%—14.70%， respectively. The method is suitable for determination of 16 PAHs from food contacting material.