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对石墨炉原子吸收法和钯基体改进剂测定微量镉的实验方法进行了研究,讨论了钯用量对镉测定灵敏度的影响,根据实验结果及X光电子谱分析,提出了钯存在下镉在石墨管内的原子化过程是一个以物理作用为主,同时伴有钯的催化还原作用的复杂的物理-化学过程的观点.
The experimental methods of graphite furnace atomic absorption spectrometry and palladium matrix modifier for the determination of trace cadmium were studied. The effects of the amount of palladium on the sensitivity of cadmium determination were discussed. According to the experimental results and X-ray photoelectron spectroscopy analysis, The atomization process is a complex physical-chemical process dominated by the physical interaction accompanied by the catalytic reduction of palladium.