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

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

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.

Polycyclic aromatic hydrocarbons （PAHs） have carcinogenic, teratogenic, muta- genic. 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, desorp- tion time, agitation speed and ion strength, good [inearity, recovery and precision were ob- tained. The linearity range is in the range of 0.01--5.0 μg/L. The linearity correlation co- efficients 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.