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根据杯形铜电极溶液法用于平炉渣光谱分析所得的初步结果,进行了一系列有关杯形电极溶液电弧光源中燃烧过程的系统试验。在不同情形下测定了溶液中各元素的燃烧曲线,看到曲线上先后有两个高峯出现,因而认为光源中的燃烧过程有两阶段,物质在这两燃烧阶段中进入放电区的方式不同。第一阶段相当于第一高峯出现的期间,在这时并没有分馏现象,这表示溶液中的物质主要是经过溶液的翻腾作用而直接从液面进入放电区的。燃烧过程的后一阶段相当于曲线上的第二高峯的部分,这个峯的形状和位置对于不同元素和不同实验条件很灵敏,有分馏现象出现。根据对于各种分析元素的分解电压,可以认为,溶液中的物质在这个燃烧阶段主要是通过电极心而进入弧柱的。在平炉渣的实际分析中,严格地控制杯中液面的高低和铜电极心的加工规格,所得到各元素的九次独立分析误差都在4%以内。
Based on the preliminary results obtained by the cup-shaped copper electrode solution method for the flat slag spectrum analysis, a series of systematic tests on the combustion process in cup electrode solution arc source were carried out. Under different conditions, the combustion curves of each element in the solution were measured and two peaks appeared on the curve. Therefore, it is considered that the combustion process in the light source has two stages and the material enters the discharge zone in different ways in the two combustion stages. The first stage corresponds to the first peak appeared, at this time there is no fractionation phenomenon, which means that the solution of the material is mainly through the solution of the tumbling effect directly into the discharge zone from the surface. The latter stage of the combustion process corresponds to the second peak on the curve. The shape and location of this peak are sensitive to different elements and different experimental conditions and fractional distillation occurs. Based on the decomposition voltage for the various analytical elements, it is believed that the material in the solution enters the arc column primarily through the electrode core during this combustion phase. In the actual analysis of flat slag, the level of liquid in the cup and the machining specifications of the copper electrode are strictly controlled, and the nine independent analysis errors of the obtained elements are all within 4%.