试验表明,以三氧化二铝:碳酸钙:氯化钠的比例为8:1:1为缓冲剂,镓,锗谱线黑度出现峰值。原因在于该缓冲剂形成的电极-电弧温度环境有利于镓、锗的蒸发与激发,而能有效地抑制电极内熔珠中蒸气分压较低的基体蒸发。动板试验显示,基体分离的效果较好。估算表明,在试验条件下,镓、锗分别有30%、84%进入电弧云中,而基体则仅有4%左右。同时, Experiments show that, with aluminum oxide: calcium carbonate: sodium chloride ratio of 8: 1: 1 as a buffer, gallium, germanium spectrum blackness peak. The reason is that the buffer-forming electrode-arc temperature environment is conducive to the gallium, germanium evaporation and excitation, and can effectively inhibit the vaporization of the electrode in the lower vapor partial pressure of the substrate vaporization. Moving plate test shows that the matrix separation is better. Estimates show that under the experimental conditions, gallium, germanium, respectively, 30%, 84% into the arc cloud, while the matrix is ​​only about 4%. Simultaneously,