石墨炉原子吸收光谱作为灵敏的分析方法,已经得到了越来越广泛的应用。但是,对于稀土元素来说,它并不是一个十分理想的分析方法,其原因是,在高温石墨炉中,稀土元素容易与碳生成高温碳化物,致使稀土元素需要的原子化温度很高,和得到的灵敏度较低,而且记忆效应比较严重。采用我们提出的衬钽技术制作的衬钽管,并结合95％Ar和5％H_2 Graphite furnace atomic absorption spectrometry as a sensitive analytical method, has been more and more widely used. However, it is not a very ideal analytical method for rare earth elements because rare earth elements easily form high-temperature carbides with carbon in high-temperature graphite furnaces, resulting in high atomic temperatures required for rare earth elements and The sensitivity obtained is lower, and the memory effect is more serious. Tantalum tube lined with our proposed lined tantalum technology, combined with 95% Ar and 5% H 2