一次性聚丙烯餐盒中汞、砷迁移量分析研究

Study on Migration of Mercury and Arsenic in Disposable Polypropylene Meal Box

为研究自然界中微塑料的来源及污染危害,采用氢化物发生原子荧光法(AFS)对一次性食品包装聚丙烯餐盒中重金属砷和汞的迁移量进行试验测定分析。试验结果表明:砷和汞标准曲线线性范围分别为0~10.0μg/L和0~1.00μg/L,呈良好的线性关系;方法检出限分别为0.03和0.003μg/dm^(2),加标回收率为94.5%~106.4%,砷和汞精密度分别为1.21%~2.13%和1.03%~1.62%。该方法快捷可靠、灵敏度高,可广泛用于聚丙烯等食品包装材料中砷和汞迁移量的快速准确检测。

In order to study the sources and pollution hazards of microplastics in nature,using hydride generation atomic fluorescence spectrometry(AFS)determined the migration of heavy metals arsenic and mercury in disposable food packaging polypropylene meal boxes.The results showed that the linear range of arsenic and mercury standard curves was 0~10 and0~1μg/L,respectively,showing a good linear relationship.The limits of detection were 0.03 and 0.003μg/dm^(2),respectively The spiked recoveries were 94.5%~106.4%,and the precision of arsenic and mercury were 1.21%~2.13%and 1.03%~1.62%,respectively.The method is fast,reliable and sensitive,and can be widely used for the rapid and accurate determination of arsenic and mercury migration in food packaging materials such as polypropylene.