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控制气氛光谱分析是利用气体的不同物理及化学特性,改善放电区域中的光辐射作用,对氧化钇中稀土杂质的分析,过去所用的在空气中激发的直接光谱分析,由于稀土元素谱线多,光谱分馏效应差,同时在分析线波段范围中复盖着氰光带和其他一些不明确的分子光谱,致使某些灵敏的分析线不能利用,限制了这些方法灵敏度的提高,不能满足纯产品的分析要求,本工作试作了一个具有良好控制性能的简单喷气装置,并选定以氩比氧为4比1的混合气体作为控制气氛激发,有效地抑制和消除了上述影响直接光谱的不利因紊,使大部分稀土杂质的灵敏度得以提高一个数量级,达到ppm级。
Controlled atmosphere spectroscopy is the use of different physical and chemical properties of gas to improve the discharge of light radiation role in the yttrium oxide in the analysis of rare earth impurities in the past used in the air excited by direct spectral analysis of the rare earth element spectrum , Spectral fractionation effect is poor, at the same time in the analysis of the band range covered with cyan band and other ambiguous molecular spectrum, resulting in some sensitive analytical lines can not be used, limiting the sensitivity of these methods to improve, can not meet the pure product In this work, a simple jet device with good control performance was tested and a mixture gas with argon to oxygen ratio of 4 to 1 was selected as the control atmosphere to excite and effectively inhibit and eliminate the above adverse effects on the direct spectrum Due to turbulence, the sensitivity of most rare earth impurities can be increased by an order of magnitude up to the ppm level.