The time dynamics of degradation of the working characteristics of longitudinally heated furnaces for spectrometers with electrothermal atomization of a sample in the presence of tungsten, zirconium, and palladium compounds used as chemical modifiers were studied. Visual changes in the state of the investigated furnaces are discussed. The loss of carbon material during the experiment is shown. Atomic absorption signals of silver and copper recorded at different stages of degradation of unmodified and modified furnaces are analyzed. An explanation of the reasons for the accelerated damage to the pyrographite coating and subsequent destruction of the polycrystalline graphite base of furnaces subjected to modification is suggested.

研究了在存在钨，锆和钯化合物作为化学改性剂的情况下对样品进行电热雾化的光谱仪纵向加热炉工作特性退化的时间动态。讨论了观察炉状态的视觉变化。显示了实验期间碳材料的损失。分析了未改性炉和改性炉的不同降解阶段记录的银和铜的原子吸收信号。提出了对加速改性的炉子中的烧蚀黄铁矿涂层加速破坏和随后破坏多晶石墨基体的原因的解释。