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为了消除组份对谱线强度的影响,本文在分析非金属试样时建议一种把粉末试样引进火花放电的综合方法。这种方法的实质在于把极细的分析试样以电弧蒸气云形式引入火花放电。分析试样先在弧光放电中蒸发,蒸发粒子在火花中再遭到气体放电云的第二次作用(激发的第二阶段),保证了分子的解离,原子的电离以及所形成离子的激发更加完善。高温度的相互作用,在很大程度上降低了试样组份对谱线强度的影响。在火花放电中获得的辐射投射到光谱仪狭缝上。输送被分析物质以及激发光谱借助于两对电极,电流通过这二对电极获得电弧和火花放电。
In order to eliminate the effect of component on the intensity of the line, this paper presents an integrated method for introducing the powder sample into spark discharge when analyzing non-metallic samples. The essence of this method is to introduce very fine analytical specimens into the spark discharge as an arc vapor cloud. The sample was first vaporized in an arc discharge and the vaporized particles were again subjected to the second action of a gas-discharge cloud in the spark (the second stage of excitation) to ensure the dissociation of the molecules, the ionization of the atoms and the excitation of the ions formed more perfect. The high temperature interaction greatly reduces the influence of the sample components on the line intensity. The radiation obtained in the spark discharge is projected onto the slit of the spectrometer. Delivery of analytes and excitation spectra With the aid of two pairs of electrodes, an electric current is passed through the two pairs of electrodes for arc and spark discharge.