ICP-MS法测定日用瓷微量溶出铅镉的研究

Study on Determination of Trace Lead and Cadmium in Domestic Cerami Simultaneously by ICP-MS

采用电感耦合等离子体质谱(ICP-MS)法,用4%乙酸溶液萃取分离Pb、Cd,对日用瓷表面微量溶出元素Pb和Cd进行了分析。对影响其测量的各种因素进行了较为详细的研究,确定了实验的最佳测定条件。结果表明,方法的检出限为:0.03(Pb)和0.02μg/L(Cd),回收率为92.79%～109.09%,RSD小于3.46%。该法应用于日用瓷中的微量溶出铅镉的测定准确、快速、简便。

Separation by 4% acetic acid extraction,trace Pb and Cd in Domestic Ceramic is determined by Inductively Coupled Plasma-Mass Spectrometry(ICP-MS).The optimum conditions for the determination are tested and discussed. The limit of the method is 0.01μg/mL(Pb), 0.01μg/mL (Cd). The recycling rate ranks from 92.79% to 109.09%.RSD is less than 3.46%.This method is accurate,quick-acquired and convenient.in the determination of trace Lead and cadmium in Domestic Ceramic.