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目的测定不同溶剂条件、微波条件下一次性发泡餐具中元素浸出状况,以期了解该种餐具的使用安全性。方法采用ICP-MS(电感耦合等离子体质谱)法测定不同条件下一次性发泡餐具的元素浸出液。结果一次性发泡餐具在4%乙酸溶液中浸泡时铅、铁、铝会有明显浸出,砷、锰、铜、镉、锌等元素则有一定量的浸出。在65%乙醇中浸泡时铅、锰、锌、铝、铁等元素有溶出,在水和正己烷条件下基本无浸出。在微波条件下,元素的浸出量会高出20%左右。结论一次性发泡餐具在使用过程中会有多种元素浸出,从而污染食品,尤其在酸性条件下更为严重,微波可以加速元素的浸出过程。
Objective To determine the leaching status of elements in disposable foaming dishes under different solvent conditions and microwaves in order to understand the safety of the use of such cutlery. Methods ICP-MS (Inductively Coupled Plasma Mass Spectrometry) was used to determine the leaching solution of disposable foaming tableware under different conditions. Results Disposable foam tableware leaching lead, iron, aluminum in 4% acetic acid solution will leach significantly, arsenic, manganese, copper, cadmium, zinc and other elements have a certain amount of leaching. When soaked in 65% ethanol, lead, manganese, zinc, aluminum, iron and other elements are eluted, and are basically not leached under the conditions of water and n-hexane. In the microwave conditions, the amount of element leaching will be about 20% higher. Conclusion Disposable foaming tableware may leach out many elements during use, thus contaminating the food, especially under acidic conditions. Microwave can speed up the leaching process of elements.