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Abstract:

The flow injection (FI) analytical determination of Se(IV) with 2,3-diaminonaphthalene (DAN) was assayed employing enhanced fluorometric detection. The different variables affecting the reaction rate between Se(IV) and DAN were studied in batch mode, and the best conditions for the 4,5-benzopiazselenol (Se-DAN complex) formation were found. On this basis, two different FI manifolds able to give optimal sensitivity were designed. Once established the optimal flow conditions for the product formation, a submicellar medium of sodium dodecylsulphate with the addition of β-cyclodextrin was tested to perform enhanced fluorometric detection. A limit of detection of 0.3 μg l-1 of Se(IV), a linear dynamic range ranging between 1 and 500 μg l-1 of Se(IV) and a sampling throughput of 40 samples h -1 were obtained. A full discussion on each stage of the optimisation procedure and the validation of the propose methodology is provided. © 2004 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:On-line submicellar enhanced fluorometric determination of Se(IV) with 2,3-diaminonaphthalene
Autor:Pedro, J.; Andrade, F.; Magni, D.; Tudino, M.; Bonivardi, A.
Filiación:Departamento de Química, Fac. de Ing. Química, Universidad Nacional del Litoral, Santiago del Estero 2829, S3000AOM Santa Fe, Argentina
Lab. de Análisis de Trazas, Depto. Quim. Inorg., Analitica Y Q., Ciudad Universitaria, Intendente Güiraldes 2160, C1428EGA Capital Federal, Argentina
Palabras clave:β-Cyclodextrin; 4,5-Benzopiazselenol; Flow injection; Fluorometric detection; Selenium determination; Assays; Chemical engineering; Micelles; Throughput; Batch modes; Flow conditions; Flow injection (FI); Fluorimetric detection; Selenium; 2,3 naphthalenediamine; 4,5 benzopiazselenol; beta cyclodextrin; dodecyl sulfate sodium; naphthalene; selenium; selenium derivative; unclassified drug; article; assay; chemical reaction; dynamics; flow; flow injection analysis; fluorometry; methodology; micelle; online analysis; priority journal; sampling; synthesis; validation process
Año:2004
Volumen:516
Número:1-2
Página de inicio:229
Página de fin:236
DOI: http://dx.doi.org/10.1016/j.aca.2004.04.016
Título revista:Analytica Chimica Acta
Título revista abreviado:Anal. Chim. Acta
ISSN:00032670
CODEN:ACACA
CAS:2,3 naphthalenediamine, 771-97-1; beta cyclodextrin, 7585-39-9; dodecyl sulfate sodium, 151-21-3; naphthalene, 91-20-3; selenium, 7782-49-2
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032670_v516_n1-2_p229_Pedro

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Citas:

---------- APA ----------
Pedro, J., Andrade, F., Magni, D., Tudino, M. & Bonivardi, A. (2004) . On-line submicellar enhanced fluorometric determination of Se(IV) with 2,3-diaminonaphthalene. Analytica Chimica Acta, 516(1-2), 229-236.
http://dx.doi.org/10.1016/j.aca.2004.04.016
---------- CHICAGO ----------
Pedro, J., Andrade, F., Magni, D., Tudino, M., Bonivardi, A. "On-line submicellar enhanced fluorometric determination of Se(IV) with 2,3-diaminonaphthalene" . Analytica Chimica Acta 516, no. 1-2 (2004) : 229-236.
http://dx.doi.org/10.1016/j.aca.2004.04.016
---------- MLA ----------
Pedro, J., Andrade, F., Magni, D., Tudino, M., Bonivardi, A. "On-line submicellar enhanced fluorometric determination of Se(IV) with 2,3-diaminonaphthalene" . Analytica Chimica Acta, vol. 516, no. 1-2, 2004, pp. 229-236.
http://dx.doi.org/10.1016/j.aca.2004.04.016
---------- VANCOUVER ----------
Pedro, J., Andrade, F., Magni, D., Tudino, M., Bonivardi, A. On-line submicellar enhanced fluorometric determination of Se(IV) with 2,3-diaminonaphthalene. Anal. Chim. Acta. 2004;516(1-2):229-236.
http://dx.doi.org/10.1016/j.aca.2004.04.016