电感耦合等离子体质谱法同时测定食品接触用金属制品中16种金属元素的迁移量
目的 建立电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry, ICP-MS)同时检测食品接触用金属制品中16种金属元素迁移量(酸性条件下)的分析方法。方法 结合实际接触条件, 将食品接触用金属制品在4%乙酸溶液煮沸30 min并重复3次, 选择2种适合的内标元素, 采用电感耦合等离子体质谱法同时对16种元素进行检测。结果 各元素在一定浓度范围内线性关系良好, 相关系数大于0.999。加标回收率为88.7%~99.8%, 相对标准偏差为1.81%~8.38% (n=6), 检出限为0.03~0.3 μg/L, 定量限为0.1~ 0.9 μg/L。结论 该方法准确、精密度好, 适合于食品接触用金属制品中16种金属元素迁移量的检测。
Objective To establish a method for simultaneous detection of 16 metal elements migration (under acidic conditions) in metal products for food contact by inductively coupled plasma mass spectrometry (ICP-MS). Methods Combined with the actual contact conditions, the metal products for food contact were boiled in 4% acetic acid solution for 30 minutes and repeated 3 times. Totally 2 suitable internal standard elements were selected, and 16 elements were detected simultaneously by inductively coupled plasma mass spectrometry. Results Each element had a good linear relationship within a certain concentration range, and the correlation coefficients were greater than 0.999. The recovery rates of standard addition were 88.7%?99.8%, and the relative standard deviation were 1.81%?8.38% (n=6). The limits of detection were 0.03?0.3 μg/L, and the limits of quantitation were 0.1?0.9 μg/L. Conclusion This method is accurate and precise, and is suitable for the detection of the migration of 16 metal elements in metal products for food contact.
标题：电感耦合等离子体质谱法同时测定食品接触用金属制品中16种金属元素的迁移量
英文标题：Simultaneous determination of the migration of 16 metal elements in metal products for food contact by inductively coupled plasma mass spectrometry
作者：
许士明 山东省产品质量检验研究院
刘晓 山东省产品质量检验研究院
唐孔科 山东省产品质量检验研究院
陈洪金 北京普析通用仪器有限责任公司
李林林 山东省产品质量检验研究院
中文关键词:食品接触用金属制品,电感耦合等离子体质谱法,金属元素,迁移量,
英文关键词:metal products for food contact,inductively coupled plasma mass spectrometry,metal elements,migration,
发表日期：2020-06-15
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