Simultaneous determination of organotin compounds by hydride generation-gas phase molecular absorption spectrometry
| Autor: | M. T. Martínez-Soria, Jesús Sanz-Asensio, M Plaza-Medina, M. Pérez Clavijo |
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| Rok vydání: | 2000 |
| Předmět: |
Organotin compounds
Central composite design Absorption spectroscopy Chemistry Hydride Analytical chemistry Mass spectrometry Chloride Gas phase molecular absorption spectrometry Analytical Chemistry Chemometrics Hydride generation chemistry.chemical_compound Partial least squares regression medicine Trimethyltin chloride medicine.drug |
| Zdroj: | RIUR: Repositorio Institucional de la Universidad de La Rioja Universidad de La Rioja (UR) RIUR. Repositorio Institucional de la Universidad de La Rioja instname |
| ISSN: | 1873-3573 |
| Popis: | This study describes the determination of ternary mixtures of dimethyltin chloride (DMT), trimethyltin chloride (TMT) and monobutyltin chloride (BT) by hydride generation-gas phase molecular absorption spectrometry and the application of different chemometric methods: principal components regression (PCR) and partial least squares (PLS). The two methods are applied to the absorption spectra of mixtures of DMT, TMT and BT. Two different experimental designs are tested for the mixtures, a triangular design and a central composite design. The models obtained from the triangular design offer the best prediction results. The effects of the number of working wavelengths and the number of factors included in the calibration model is studied and a different behaviour is seen for each compound and calibration model. The methods are applied to the analysis of artificial aqueous samples containing different concentrations of DMT, TMT and BT species. No significant differences are observed between the calibration models investigated. © 2001 Elsevier Science B.V. |
| Databáze: | OpenAIRE |
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