食品接触用硅橡胶中8种金属元素的迁移分析
目的 研究食品接触用硅橡胶制品中8种金属元素(钡、锂、铜、铁、钴、锰、锌和铝)的迁移量。方法 以3%乙酸(m:V)作为食品模拟物, 利用电感耦合等离子体质谱法测定食品接触用硅橡胶中8种金属元素的迁移量。结果 各金属元素的线性范围在1~100 μg/L, 方法检出限在0.005~0.6 μg/kg之间, 加标回收率在88.4%~108.0%, 重复性测定相对偏差(n=6)在1.2%~3.6%之间。对20批次食品接触用硅橡胶制品中8种金属元素的迁移量进行测试, 发现7种金属元素(钡、锂、铜、铁、锰、锌和铝)均有检出。结论 该方法可以准确测定食品接触用硅橡胶中8种金属元素(钡、锂、铜、铁、钴、锰、锌和铝)的迁移量, 且检测结果显示随着迁移次数的增加迁移量逐渐降低。
Objective To investigate the migrations of 8 metal elements (Ba, Li, Cu, Fe, Co, Mn, Zn, and Al) in food contact silicone rubber product. Methods Acetic acid (3%, m:V) was used as food simulate, and inductively coupled plasma mass spectrometry (ICP-MS) was used to determine the 8 migratory metal elements in food contact silicone rubber product. Results Linear relationships of 8 metal elements were ranged from 1 to 100 μg/L. The limits of quantitation (LOQs) of 8 metal elements were ranged from 0.005 to 0.6 μg/kg, the recoveries were ranged from 88.4% to 108.0%, and the relative standard deviations (RSDs) were ranged from 1.2% to 3.6% (n=6). The migrations of 8 metal elements (Ba, Li, Cu, Fe, Co, Mn, Zn, and Al) in 20 batches of food contact silicone rubber products were tested, and the result indicated that 7 metal elements (Ba, Li, Cu, Fe, Mn, Zn, and Al) were detected as positive. Conclusion The method can accurately determine the migrations of 8 metal elements (Ba, Li, Cu, Fe, Co, Mn, Zn, and Al) in food contact silicone rubber product, and the migrations decrease gradually as the increasing of the number of migration.
标题：食品接触用硅橡胶中8种金属元素的迁移分析
英文标题：Analysis of 8 migratory metal elements in food contact silicone rubber
作者：
孙衎 上海市质量监督检验技术研究院轻工与化工产品质量检验所
万峰 上海市质量监督检验技术研究院轻工与化工产品质量检验所
禄春强 上海市质量监督检验技术研究院轻工与化工产品质量检验所
罗婵 上海市质量监督检验技术研究院轻工与化工产品质量检验所
孙多志 上海市质量监督检验技术研究院轻工与化工产品质量检验所
李军 上海市质量监督检验技术研究院轻工与化工产品质量检验所
左莹 上海市质量监督检验技术研究院轻工与化工产品质量检验所
中文关键词:电感耦合等离子体质谱法,食品接触用,硅橡胶制品,迁移金属元素,
英文关键词:inductively coupled plasma mass spectrometry,food contact,silicone rubber product,migratory metal elements,
发表日期：2018-10-08
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