ICP-MS测定食品包装材料中的微量锑

A method to determine trace antimony in packaging materials for food by inductive coupled plasma mass spectrometry

目的：建立简便、快速、高效的测定食品包装材料中微量锑的方法。方法：沸水浴蒸发处理样品乙酸浸泡溶液,利用电感耦合等离子体-质谱（ICP-MS）,检测食品包装材料中的微量锑。结果：锑浓度在0.042～100μg/L范围内呈现良好的线性,回归方程为Y=8132.3X＋4984.4,相关系数r=0.9997,检出限为0.042μg/L,相对标准偏差RSD为0.57%～3.23%,回收率92.9%～100.8%。结论：该法具有快捷、灵敏度高、精密度好等优点。

Objective： To establish a simple and fast high performance method to determine trace antimony in packaging materials for food.Methods：Evaporating the sample solution of acetic acid with boiling water,trace antimony in packaging materials for food was determined by inductive coupled plasma mass spectrometry.Results：The linear range of this method was 0.042~100 μg /L,regression formula was Y=8132.3X＋4984.4,r=0.9997.The detection limit of this method was 0.042 μg/L,RSD was 0.57%~3.23%,and the recovery was at the range of 92.9%~100.8%.Conclusion：The described method is simple,fast and sensitive.