论文部分内容阅读
在轻稀土元素中,钕的应用较为广泛。在光谱分析中普遍应用氩-氧控制气氛直流电弧粉末法测定稀土元素氧化物中稀土元素杂质。测定下限比一般直流电弧法改善1—2个数量级,手续相对比化学光谱法简便。本文采用碳粉为缓冲剂、大色散光谱仪,一次摄谱测定14个稀土元素。测定下限达0.00x—0.0x%,部份元素可达0.000x%;变异系数为4.5—25%。与国外同类仪器所测水平相当。仪器及工作条件GE-340型平面光栅摄谱仪,三透镜照明系统,波段中心7670埃;气氛:氩:氧=4:1,流量5升/分;光源:直流电弧阳极激发,230伏,
In light rare earth elements, neodymium is widely used. Determination of Rare Earth Elements Impurities in Rare Earth Oxides by DC Arc Powder Method Using Argon - Oxygen Control Atmosphere in Spectral Analysis. Lower limit of determination than the average DC arc method to improve 1-2 orders of magnitude, relative to the relative simplicity of chemical spectroscopy. In this paper, carbon powder as a buffer, large dispersion spectrometer, a determination of 14 rare earth elements. Determination of the lower limit of 0.00x-0.0x%, some of the elements up to 0.000x%; coefficient of variation of 4.5-25%. Equivalent level with similar foreign instruments measured. Instrument and working conditions GE-340 plane grating spectrometer, three lens lighting system, the band center 7670 angstroms; atmosphere: argon: oxygen = 4: 1, the flow rate of 5 l / min; light source: DC arc anode excitation, 230 V,