植物油种类对聚氯乙烯中环氧大豆油迁移的影响研究

Study on the influence of vegetable oil species on the migration of epoxy soybean oil in PVC

中文关键词:  环氧大豆油  植物油  气相色谱-质谱联用仪  迁移量

英文关键词:epoxy soybean oil  vegetable oil  gas chromatography-mass spectrometry  the migration amount

中文摘要:

      目的 探究植物油种类对聚氯乙烯(polyvinyl chloride, PVC)中环氧大豆油(epoxidized soybean oil, ESBO)迁移的影响。方法 利用气相色谱-质谱联用法对PVC中ESBO向不同植物油中的迁移量进行表征。结果 该检测方法对所研究的植物油都适用, 并可对5~100 mg/kg浓度范围内的ESBO进行准确定量, 平均回收率为99.3%~103%, 相对标准偏差为0.23%~6.58%。迁移试验结果显示, ESBO在不同植物油中的迁移趋势相同, 即为当迁移时间相同时, 迁移量随着迁移温度的增加而增加；迁移温度相同时, 迁移量随着迁移时间的增加先增大后达到平衡。从迁移量数值上来看, ESBO在橄榄油中的迁移能力较椰子油中的小, 但是与玉米油、芝麻油、菜籽油和大豆油中的相当。结论 除了迁移试验温度和时间外, 植物油种类对ESBO的迁移也有着重要影响, 以橄榄油为食品模拟物并不能完全代表ESBO在其他植物油中的迁移。

英文摘要:

      Objective To investigate the effect of vegetable oil species on the migration of epoxy soybean oil (ESBO) in polyvinyl chloride (PVC). Methods The migration of ESBO to different vegetable oils in PVC was characterized by gas chromatography-mass spectrometry. Results This test method was applicable to all vegetable oils studied and could accurately quantify ESBO in the concentration range of 5~100 mg/kg. The average recoveries were 99.3%-103%, and the relative standard deviations were 0.23%-6.58%. The migration test results showed that the migration trend of ESBO in different vegetable oils was similar, when the migration time was the same, the migration amount increased with the increase of the migration temperature. With the same migration temperature, the amount of migration increases first and then reaches equilibrium with the increase of migration time. From the point of view of migration value, the migration capacity of ESBO in olive oil was smaller than that in coconut oil, but was equivalent to that in corn oil, sesame oil, rapeseed oil and soybean oil. Conclusion In addition to the temperature and time of the migration test, the type of vegetable oil also has an important influence on the migration of ESBO. Using olive oil as a food simulant does not fully represent the migration of ESBO in other vegetable oils.