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用旋流雾室系统代替原用的Ｓｃｏｔｔ雾室系统，降低了ＩＣＰ直读光谱仪分析下限。并引入外加内标元素（Ｙ）的方法测定纯铯中的１３个杂质元素。本法适用于纯度为９９．９～９９．９９５％纯他的分析。
Replacing the original Scott mist chamber system with a swirling mist chamber system reduces the lower ICP analytical spectrometer limit. And the introduction of external standard element (Y) method for the determination of 13 pure cesium impurity elements. This method applies to the purity of 99.9 ~ 99.995% pure his analysis.