微波消解一氢化物发生原子荧光法测定天麻中的砷

目的：建立一种微波消解样品、氢化物发生原子荧光法测定天麻中的砷含量的方法。方法：采用微波消解技术消解天麻，利用氢化物发生原子荧光法在优化条件下测定其中砷的含量。结果：测定其天麻中砷的回收率为95．2％～105．6％，RSD为2．9％。结论：本测定方法具有检出限低、灵敏度高、准确度高、操作简便快速、线性范围宽等特点，能够达到测定天麻中微量砷的要求。

Determination of Arsenic in Gastrodia by Atomic Flurescence Spectrometry with Microwave Digestion

Objective： A method for determination of Arsenic in gastrodia is established by atomic flurescence spectrometry with microwave digestion. Methods：In this study, atomic fluorescence spectrometer was applied to determine Arsenic under optimized conditions in Gastrodia, Microwave digestion was employed in sample pretreatment. Results：The recovery and precision of Arsenic in gastrodia are between 95.2%-103.6% and 2.9%.Conclusion：The result indicates that the methods can be widely applied to determine Arsenic in gastrodia with simple, fast and accurate.