石墨炉内石墨探针表面上的原子化机理研究 Ⅳ钒的原子化机理  

ATOMIZATION MECHANISM OF VANADIUM ON THE GRAPHITE PROBE SURFACE IN GRAPHITE FURNACE

作　　者：王建平[1] 邓勃[1] 

机构地区：[1]清华大学化学系

出　　处：《光谱学与光谱分析》1992年第3期83-88,共6页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金~~

摘　　要：本文通过X-射线衍射分析(XRD),扫描电子显微镜分析(SEM),化学分析光电子能谱分析(ESCA),并结合原子吸收测量,研究了钒在普通石墨管中石磨探针表面上发生的固相化学反应。结果表明,钒化合物在灰化阶段即可转化为热稳定性较高的碳化物,原子化的最后步骤为碳化物的热分解。The atomization mechanism of Vanadium on the graphite probe surface in graphic furnace has been investigated, using X-ray diffraction spectrometry (XRD), scanning electron micrography (SEM), and electron spectroscopy for chemical analysis (ESCA), as well as atomic absorption measurement. During the charring period, species of vanadium can be changed into stable carbide on the probe surface, and then, which will decompose into free atoms of vanadium and carbon at relatively high temperature.

关 键 词：原子化机理 石墨探针 钒 

分 类 号：O614.511[理学—无机化学]