为了探究市售自热火锅包装内盒中邻苯二甲酸酯类（Phthalic Acid Esters，PAEs）塑化剂在加热条件下的迁移状况，本文采用气相色谱-质谱仪（GC-MS）建立了18种PAEs塑化剂的检测方法，并对四种不同材质的182个自热火锅包装内盒中塑化剂的迁移量进行了测定。在采用标准品建立PAEs的GC-MS检测方法基础上，参照国家标准对自热火锅包装内盒进行前处理，并测定了其中的PAEs含量。结果表明，以HP-5MS石英毛细管柱为分离柱，18种PAEs的分离效果良好，方法检出限为0.005~0.02 μg/mL，线性范围0.05~5.14 μg/mL，相关系数（R）均大于0.999，相对标准偏差均小于10%，回收率为92.0%~99.6%；对四种不同材质的182个自热火锅包装内盒中的PAEs含量进行测定，均未检出。总之，本文建立的PAEs塑化剂的GC-MS测定方法，具有简单高效，实用性强，检出限低、精密度及回收率高等特点，适用于自热火锅包装内盒中PAEs的快速检测。

To investigate the migration of phthalic acid ester (PAE) plasticizers in the inner boxes of self-heating hot pots on the market under heating conditions, a gas chromatography-mass spectrometer (GC-MS) was used to establish the method for detecting 18 types of PAE plasticizers, and the migration amounts of PAEs in 182 self-heating hot pot inner boxes made of four different materials were tested. Based on establishing the PAE determination method with standard PAE samples, the inner boxes of self-heating hot pot packages were pre-treated with reference to the related national standard of China,, and then, the content of PAEs was detected. The results showed that when using the HP-5MS quartz capillary column as the separation column, the 18 types of PAEs were separated effectively. The detection limits were 0.005~0.02 μg/mL, the linear range was 0.05~5.14 μg/mL, the correlation coefficients (R) were all greater than 0.999, the relative standard deviations were less than 10%, and the recovery rates were 92.0%~99.6%. No PAEs were detected in any of the 182 self-heating hot pot inner boxes. In summary, the established GC-MS method for PAE determination can be characterized by its simplicity, high efficiency, strong practicality, low detection limit, high precision, and high recovery rate. It is suitable for the rapid detection of PAEs in the inner boxes of self-heating hot pots.

国家市场监督管理总局科技计划（2019MK097）；四川省科技计划重点研发项目（19ZDYF1036；2019YFN0172）；国家现代农业产业技术体系四川创新团队项目（sccxtd-2020-15）；成都市技术创新研发项目（2019-YFYF-00023-SN）