多元校正-动力学谱法同时测定铬、钼、钨

Simultaneous Determination of Cr( Ⅵ) , Mo( Ⅵ)and W( Ⅵ) by Multivariate Calibration and Kinetic Spectrum

基于各组分动力学谱的差异， 以Ｈ２Ｏ２ 氧化ＫＩ为指示反应， 对Ｃｒ（ Ⅵ） 、Ｍｏ（ Ⅵ） 和Ｗ（ Ⅵ）进行了同时测定． 铂电极被用作指示物质Ｉ－３ 的指示电极， 装备有ＡＤ卡的奔腾电脑被用来同步记录动力学过程． 主成分回归法被用以建模并预报未知混合样品．

Based on the difference in kinetic spectra, a method forthe simultaneous determina tion of Cr( Ⅵ), Mo( Ⅵ)and W( Ⅵ)is proposed by meansof multivariatecalibration .Theredox between KIand H2O2 wasemployed asan indicatorreaction and citric acid asan assistantagent. The kinetic process was synchronously recorded by a computer equipped with an ADcard and platinum electrode as an indicator electrode of I-3 which is an indicator in this system .Principal componentregressionisemployed to create the modeland predict unknown mixed samples.