Simultaneous Spectrophotometric Determination of Trace Iron (Ⅲ) and Aluminum (Ⅲ) with Hybrid Linear Analysis
- VernacularTitle:混合线性分析-分光光度法同时测定微量铁和铝
- Author:
Xiaojia WANG
;
Baoning WANG
- Publication Type:Journal Article
- From:
Chinese Journal of Analytical Chemistry
2001;29(2):142-145
- CountryChina
- Language:Chinese
-
Abstract:
Hybrid linear analysis (HLA) was applied to resolution of overlapping spectra of Fe3+ -salicylfluorone and Al3+ -salicylfluorone complexes and simultaneous spectrophotometric determination of Fe3 + and Al3 + . The absorbance matrix of 7 standard mixtures at 41 measuring points ranged from the wavelength of 550 nm to 630 nm was used for calibration. To avoid the effect of interaction between the two components on the determination, the column vector of K matrix obtained from the standard mixtures with least squares was used as the pure spectrum of component. The recoveries of the two elements for the analysis of the synthetic samples were 93.3% ～ 107.5% in the range of the concentration ratio of Fe3+:Al3+ = 10:1 to 1:8. Comparing with the partial least squares (PLS) model,the HLA method was simple,accuracy and precise.
