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《Chemical Research In Chinese Universities》 1991-06
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Determination of Heavy Rare Earth Mixtures with Differential Kinetics-Factor Analysis

GU Zhi-cheng, Xu Liang (Department of Chemistry, Tongji University, Shanghai, 200092)  
The kinetic behavior in the substitution reactions of heavy rare earth-arsenazo Ⅲ complex with CyDTA has been studied by an on-line spectrophotometer. Several binary and ternary mixtures of heavy rare earth elements were determined by differential simultaneous kinetics and the data were analyzed by the factor analysis. The result is satisfactory if the binary or ternary mixtures do not contain adjaeent rare earth elements.
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