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An optimization study of the fluorimetric determination of aluminium by 1-isonicotinyl-2-(2′, 4′-dihydroxy)-benzylidene hydrazine

Optimierungsstrategie für die fluorimetrische Aluminiumbestimmung mit 1-Isonicotinyl-2-(2′,4′-dihydroxy)-benzyliden-Hydrazin

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Zusammenfassung

Die Anwendung der Faktoranalyse als Optimisationsstrategie für eine fluorimetrische Bestimmung von Aluminium wird diskutiert. Das System besteht aus Aluminium als Analyt und Fluorid als Fremdion. Vier weitere Faktoren sind im Optimisationsprozeß eingeschlossen: Zusammensetzung der Lösung, pH des Systems, Ein- und Ausganglicht-Spaltbreite. Um die Werte der Regressionskoeffizienten zu berechnen und eine Regressionsgleichung, die die Responsefunktion beschreibt, zu erhalten, wurde der Factorial Design 2n verwendet. Zusätzlich wurden auch „mapping“ Experimente durchgeführt, um die gefundenen optimalen Bedingungen zu prüfen.

Summary

The paper deals with the application of factorial design as an optimization strategy in a fluorescent analytical method for the determination of aluminium. The system consists of aluminium as a species to be analysed and fluoride as interference. Four other factors are included in the optimization process: solvent composition, pH of the system, entrance light slit width and output slit width. The fractional factorial design of the type 2n is applied to estimate the significance of the factors and to derive a regression equation of the response function. Additionally, mapping experiments are performed to prove the validity of the optimal conditions found.

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Authors and Affiliations

  1. Lab. of Analyt. Chemistry, Aristotelian Univ. of Thessaloniki, Thessaloniki, Greece

    C. Apostolopoulou, A. Voulgaropoulos, V. Simeonov & G. Vasilikiotis

Authors
  1. C. Apostolopoulou
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  2. A. Voulgaropoulos
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  3. V. Simeonov
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  4. G. Vasilikiotis
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Additional information

On leave from Chair of Analyt. Chemistry, Fac. of Chemistry, Univ. of Sofia, 1126 Sofia, Bulgaria

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Apostolopoulou, C., Voulgaropoulos, A., Simeonov, V. et al. An optimization study of the fluorimetric determination of aluminium by 1-isonicotinyl-2-(2′, 4′-dihydroxy)-benzylidene hydrazine. Z. Anal. Chem. 309, 365–369 (1981). https://doi.org/10.1007/BF00473718

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  • DOI: https://doi.org/10.1007/BF00473718

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