ICP-MS法测定茶叶中铅、铬、镉、砷、铜等重金属元素

Determination of Lead,Chromium,Cadmium,Arsenic,Copper and other heavy metals in tea by ICP-MS

中文关键词:  茶叶  ICP-MS  重金属  微波消解  

英文关键词:tea  ICP-MS  heavy metals  microwave digestion  

中文摘要:

      本文采用微波消解方法处理茶叶样品后,用ICP-MS法测定茶叶中铅、铬、镉、砷、铜等重金属元素的含量。通过优化ICP-MS仪器测定条件,用内标克服仪器信号漂移及样品基体效应的影响,建立了ICP-MS法同时测定茶叶中多种元素。测定茶叶标准物质GBW10016表明,各元素结果与标准值一致。该法可以同时测定茶叶中多种重金属元素,且简便快速,精密度和准确度都较好。

英文摘要:

      In this paper,microwave digestion approach to tea samples,with the tea leaves by ICP-MS determination of lead,chromium,cadmium,arsenic,copper and other Heavy metal content.By optimizing the conditions for ICP-MS instrument measured using an internal standard to overcome the instrument drift and sample matrix effects,the establishment of the ICP-MS method for simultaneous determination of many elements in tea.Determination of tea reference material GBW 10016 showed that all elements of the same results with standard values.The method can also measure a variety of Heavy metal in tea,and simple and fast,precision and accuracy are better.