可降解塑料的安全性是研究的热点和焦点。研究基于可降解塑料袋中主要成分的测定，并对添加的乙酰柠檬酸三丁酯（ATBC）迁移规律进行分析。采用气相色谱质谱联用仪（GC-MS）检测可降解塑料袋中ATBC向不同食品模拟液中的迁移情况。研究了迁移时间为10 d时，不同温度、不同厚度和不同食品模拟液中ATBC的迁移规律。可降解塑料袋在相同温度和厚度条件下，ATBC在95%乙醇模拟液中迁移量最大。其他条件相同的条件下，厚度越小，ATBC的迁移量就越大。相同食品模拟液中，迁移时间相同时，温度越高，ATBC的迁移量越大。食品模拟液的种类、迁移温度、迁移时间、塑料袋厚度对可降解塑料袋中ATBC的迁移规律有重要影响。

The safety of degradable plastics is the focus of research.The study was based on the determination of main components in degradable plastic bags, and the migration of acetyl-tributyl citrate (ATBC) was analyzed. The migration of ATBC from degradable plastic bags to different food simulants was detected by gas chromatography-mass spectrometry (GC-MS). The migration rule of ATBC in different temperature, thickness and food simulants was studied at 10 days. Under the same temperature and thickness of degradable plastic bags, the migration amount of ATBC in 95% ethanol simulated solution was the largest. Other conditions being equal, the smaller the thickness, the greater the amount of ATBC migration. In the same food simulation solution with the same migration time, the higher the temperature, the greater the amount of ATBC. The type of food simulation liquid, migration temperature, migration time and thickness of plastic bags have important effects on the migration of ATBC in degradable plastic bags.