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Abstrakty
A factorial design was applied for the development of a solid surface room-temperature phosphorimetric method aiming the selective determination of chrysene. Data analysis was made using statistical experimental analysis (testing the significance of the factors using the analysis of variation, F-test and t-test), graphic method (Pareto´s chart) and the evaluation of the interactions among all variables. This procedure was used in order to guarantee high accuracy of results and minimization of the time spent for optimization. As the result, the experimental conditions using a selective phosphorescence inducer (silver) and a substrate surface modifier allowed the determination of chrysene in the presence of pyrene. The method allowed the detection of effective masses of chrysene in the ng range. Method validation is presented including a recovery and "t" tests using a Standard Reference Material.
Czasopismo
Rocznik
Tom
Strony
125--135
Opis fizyczny
Bibliogr. 12 poz., rys., wykr.
Twórcy
autor
autor
autor
- Pontifícia Universidade Católica do Rio de Janeiro (PUC-RJ), Chemistry Department, Brazil, alicursi@osite.com.br
Bibliografia
- 1. CITAC/EURACHEM, Guide to Quality in Analytical Chemistry, 2002.
- 2. Montgomery D. C.: Analytical Designs Experiments, pp. 9-104, 2003.
- 3. Vo-Dinh T.: Chemical analysis of polycyclic aromatic compounds, Chemical Analysis Series vol. 101, John Wiley & Sons, New York, 1989.
- 4. Vo-Dinh T.: Room temperature phosphorimetry for chemical analysis, Chemical Analysis Series, vol. 68, John Wiley & Sons, New York, 1984.
- 5. Vo-Dinh T., Hooyman J. R.: Selective heavy-atom perturbation for analysis of complex mixtures by room temperature phosphorimetry, Anal. Chem., 51 (1979) pp. 1915-1921.
- 6. Kasha M.: Collional perturbation of spin-orbital coupling and the mechanism of fluorescence quenching. A visual demonstration of the perturbation, J. Chem. Phys., 20 (1952), pp. 71-74.
- 7. Hurtubise R. J.: Phosphorimetry: Theory, Instrumentation and Applications, VCH: New York, 1990.
- 8. ANVISA, Guide to Quality in Analytical Chemistry, vol. 1, Brazil, 2004.
- 9. INMETRO, Orientations about method’s validation in chemistry test, DOG CGCRE-008, 2003.
- 10. ABNT, Standard ISO/IEC 17025/2005.
- 11. INMETRO, Metrological International Vocabulary (VIM), RJ - Brazil, 2003.
- 12. CITAC/EURACHEM, Quantifying Uncertainty Analytical Measurement, 2000.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSW1-0028-0010