CHEMICAL APPROACH TO ILL-CONDITIONED CALCULATION PROBLEMS IN SPECTROPHOTOMETRY

被引：1
|
作者：
ZHANG, PX
REN, Y
机构：
[1] Changchun Institute of Applied Chemistry, Academia Sinica, Changchun
来源：
ANALYTICA CHIMICA ACTA | 1990年 / 234卷 / 02期
关键词：
Calibration; Chromogenic reagents; Ill-conditioned system calibration; Rare earth elements;
D O I：
10.1016/S0003-2670(00)83596-5
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Multiple-component determinations present difficulties which cannot be resolved mathematically when there is severe spectral overlap, as in the determination of rare-earth elements with chromogenic reagents. The interdependence of absorptivities is greatly decreased when absorbance data from procedures based on several chromogenic reagents are used together in the calculations of calibration factors and concentrations. Various features of the method are discussed. © 1990.
引用
收藏
页码：483 / 486
页数：4
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