采用ICP-MS研究聚酯类食品包装材料中锑向食品模拟物的迁移规律  

Study on migration of antimony from polyester food packaging materials to food simulants by ICP-MS

作　　者：姚春毅 艾连峰[1] 郭春海[1] 陈瑞春[1] 李丽欣[2] 张峻峰[1] 

机构地区：[1]河北出入境检验检疫局,石家庄050051 [2]河北化工医药职业技术学院,石家庄050026

出　　处：《中国食品卫生杂志》2013年第1期12-15,共4页Chinese Journal of Food Hygiene

基　　金：国家质量监督检验检疫总局科研资助项目(2008IK116)

摘　　要：目的建立聚酯(PET)和4种食品模拟物中锑的电感耦合等离子体质谱(ICP-MS)测定方法。用该方法研究PET中的锑向水、10%(V/V)乙醇溶液、3%(W/V)乙酸水溶液和精炼橄榄油4种食品模拟物迁移的行为与浸泡时间、温度、食品模拟物属性、锑初始含量等参数的关系。方法在不同的温度下,将不同的PET浸泡于食品模拟物中,于一定的时间点吸取少量浸泡液,用ICP-MS测定其含量。结果 ICP-MS方法回收率在94.3%～96.1%之间,相对标准偏差在1.38%～3.31%之间。结论锑迁出量随温度升高而增加;随着时间的延长,锑迁出量逐渐增加,一定时间后达到迁移平衡;大部分PET材料本底含量越高迁出量越高;PET中锑易于在酸性食品模拟物中迁出,应少食用PET包装的酸性食品。Objective An ICP-MS method was developed to determine antimony in polyester （PET） food packaging materials and four food simulants. Using this method, the initial concentration of antimony in PET and the migration from PET to food stimulants by time, temperature and different food simulants were studied. Methods Under different temperatures, different PET samples were soaked in 4 food simulants of water, 10% （V/V） ethanol solution, 3% （W/V） acetic acid solution and olive oil, respectively. At certain time point, the soaking solution was analyzed by ICP-MS. Results Recoveries of ICP-MS method were in the range of 94.3% -96. 1% , and the relative standard deviations were in the range of 1.38% -3.31%. The results showed that migration had positive correlation with temperature, the initial concentration and soaking time, but migration balanced after a certain period. Conclusion Antimony in PET was easier to migrate to acidic food stimulants. It suggested that the consumption of acidic food packaged with PET should be reduced.

关 键 词：电感耦合等离子体质谱(ICP-MS) 聚酯 食品包装材料 锑 食品模拟物 迁移 

分 类 号：R155.5[医药卫生—营养与食品卫生学]