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众所周知,许多稀土元素的光谱是十分复杂的,稀土元素的谱线越多,谱线干扰的可能性也就越大。在这种情况下,常常难以找到完全不受干扰的谱线。为了降低稀土谱线间的光谱干扰,往往都采用高色散率的光谱仪器来解决复杂的稀土分析问题。曾有一些以中等色散率的仪器分析稀土元素的报道,但分析对象的光谱均较为简单,或者在测定前把基体预先除去,或者仅测定其中少数几个稀土元素。 Tb是稀土元素中光谱最为复杂的元素之一,据报道Tb的光谱线可达3400条之多。本文采用中等色散率光谱仪测定Tb基体中的痕量稀土杂质。
As we all know, many rare earth elements of the spectrum is very complex, the more the spectrum of rare earth elements, the greater the probability of spectral interference. In this case, it is often difficult to find a completely undisturbed spectrum. In order to reduce the spectral interference between rare earth lines, often using high dispersion spectroscopy equipment to solve complex problems of rare earth analysis. There have been some reports on the analysis of rare earth elements with medium dispersion instruments. However, the spectrum of the analyte is relatively simple, either the matrix is removed before measurement or only a few rare earth elements are measured. Tb is one of the most complex elements in the spectrum of rare earth elements. Tb is reported to have up to 3,400 spectral lines. In this paper, the determination of trace amounts of rare earth impurities in the Tb matrix using a moderate dispersion rate spectrometer.