Citation: Yong Nian NI, Xin Ming YIN. SPECTROPHOTOMETRIC ANALYSIS OF MIXTURES OF TRACE METAL BY DOUBLE-SYSTEM AND MULTIVARIATE CALIRRATION[J]. Chinese Chemical Letters, ;1993, 4(2): 157-158. shu

SPECTROPHOTOMETRIC ANALYSIS OF MIXTURES OF TRACE METAL BY DOUBLE-SYSTEM AND MULTIVARIATE CALIRRATION

Department of Chemistry, Jiangxi University, Nanchang, 33007

Received Date: 31 July 1992

In this paper,a new method for simultaneous spectrophotometric analysis of multicomponent with double-system was developed.The multivariate calibration method,principal component analysis-partial least squares(PCA-PLS),was described and applied to the processing of measurement data.A demonstration,simultaneous determination of cobalt,nickel,copper,zinc and iron with double-system(5-Br-PADAP and PAR as chromogenic chelate reagents,respectively) was given.The results showed that the method with douhle-system gave better precision than those with single system and MLR(in this paper,AKC method was selected)did not give satisfied precision in any situation.
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