Chemical approach to ill-conditioned calculation problems in spectrophotometry |
| |
| Authors: | Peixun Zhang Ying Ren |
| |
| Affiliation: | Changchun Institute of Applied Chemistry, Academia Sinica, Changchun China |
| |
| Abstract: | 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. |
| |
| Keywords: | Rare earth elements Chromogenic reagents Ill-conditioned system calibration Calibration |
| 本文献已被 ScienceDirect 等数据库收录！ |
