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主成分回归光度法同时测定钴镍铜铬
引用本文:刘德龙,阎俊英.主成分回归光度法同时测定钴镍铜铬[J].河北师范大学学报(自然科学版),2000,24(3):349-350,379.
作者姓名:刘德龙  阎俊英
作者单位:河北师范大学化学系河北石家庄 050091
基金项目:河北省教育厅博士科研项目,98207,
摘    要:由于钴、镍、铜、铬有色离子的吸收光谱严重重叠,较难用光度法选择性测定试样中单一元素。为了探讨不经分离直接测定样品中的单一元素,应用主成分回归法处理校正样吸光数据,并根据校正样中的单一已知元素浓度向量求算浓度转换向量,转换向量求出后就可对任意待测样吸光度向量进行转换从而求出待求组分的浓度。对不同比例的钴、镍、铜、铬合成样分析均取得了满意结果。

关 键 词:        主成分回归法  分光光度法  测定
文章编号:1000-5854(2000)03-0349-02

Determination of Cu2+,Co2+,Ni2+,Cr3+ in Their Mixtures by Principal Component Regression-spectrophotometry
LIU De long,YAN Jun ying.Determination of Cu2+,Co2+,Ni2+,Cr3+ in Their Mixtures by Principal Component Regression-spectrophotometry[J].Journal of Hebei Normal University,2000,24(3):349-350,379.
Authors:LIU De long  YAN Jun ying
Abstract:Since the spectra of Cu2+, Co2+, Ni2+ ,Cr3+ overlap seriously,it is not easy to determine single element and the principal component regression method for selective determination of Cu2+,Co2+, Ni2-,Cr3+ in their mixtures was developed and described. In the method,the transformation vector from abstract concentration matrix to true concentration was calculated with a set of standard samples and the principal component matrix. When having determined the transformation vector,it is used to predict the content of Cu2+,Co2+ ,NJ2+,Cr3+ in unknown samples. The method here has been successfully applied to determine Cu2+,Co2+,Ni2+,Cr3+ in the synthetic samples.
Keywords:Cu    2  Co    2  Ni    2  Cr    3  principal component regression method  spectrophotometry  chemometrics  
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