电感耦合等离子体-质谱法测定食品容器搪瓷中可溶性铅、镉、锑含量

Determination of Soluble Lead、Cadmium、Antimony in Enamel Food Contact Materials by ICP-MS

摘要: 建立了使用电感耦合等离子体质谱技术（ICP-MS）分析食品容器搪瓷中重金属铅、镉、锑溶出量的方法. 使用内标法定量，研究了使用不同浸泡浓度、浸泡时间以及浸泡次数对重金属溶出量的影响变化. 对于镉、锑、铅的方法检出限分别为0.007、0.35、0.07 μg/L，相对标准偏差分别为0.31%、0.87%、0.29%，回收率在78.1%~104.4%. 方法快速、简便，具有较好的准确度和精密度，对进出口搪瓷制品的日常检验提供了依据.

Abstract: A procedure has been developed for the determination of soluble lead、cadmium、antimony in enamel food contact materials by the inductively coupled plasma-mass spectrometry (ICP-MS) method. The concentration was determined using an internal standard method, different concentrations of the immersing solution, immersing time and the number of times were studied. The detection limit were 0.007,0.35 and 0.07 μg/L, with RSD 0.31%,0.87% and 0.29% for cadmium, antimony and lead, respectively the recoveries were in the range of 78.1%~104.4%. The fast, simple method with good accuracy and precision can be used for the routine test for import and export enamel products.