ICP-MS法测定茶叶中微量金属元素含量

Determination of the trace elements in tea by ICP-MS

目的:建立了茶叶和茶叶提取物中微量金属含量的测定方法。方法:样品经微波消解后,以铟为内标,用电感耦合等离子体质谱(ICP-MS)测定样品中10种微量金属元素。结果:方法快速、准确、检测限低。对茶树叶标准物质(GBW08513)测定结果满意。结论:ICP-MS 法是测定茶叶中微量金属元素的有效分析方法,内标法使得测定方法更加完善、可靠。

Objective：Established the method for determination of the race elements in tea and the extraction of ICP -MS for determination of 17 elements. Reslut：The method provided excellent sensitivity and accuracy. It was a efficient method for determination of 10 elements in tea. The results obtained showed close agreement with the reference values the standard reference material of tea leaves （GBW08513 ）. Conclusion：The method is accurate and reliable. Using the in as an internal standard can make the method consummately and reliable.