Optical fiber reflectance sensor coupled to a multisyringe flow injection system for preconcentration and determination of 1-naphthylamine in water samples

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AudienciaPúblico en generales_ES
CoberturaMéxico[ 143]es_ES
Fecha de ingreso2026-10-05T16:34:49Z
Fecha de publicación2006-01-01
ResumenA novel optical fiber reflectance sensor is coupled to a multisyringe flow injection system (MSFIA) for the preconcentration and determination of I -naphthylamine (NPA) in water samples using C 18 disks (octadecyl groups). NPA, being a first-class carcinogen, is important from a toxicological point of view and, therefore, its quantification is of considerable interest. In this study, the Griess reaction is used for sensitive and selective spectrophotometric determination of NPA. The reaction involves conversion of nitrite into nitrous acid in acidic medium followed by diazotization of sulphanilic acid and formation of a diazonium salt. The diazonium salt is then combined with NPA to form 4-(sulphophenylazo)-1-naphthylarnine, an azo dye. This compound is subsequently retained onto a C18 disk followed by spectrophotometric detection at 540nm, and it is then eluted with methanol in water (80\%, v/v), so that the C18 disk is regenerated for subsequent experiments. Under the established optimum conditions, a calibration graph for NPA was constructed. Good linearity was observed within a concentration range from 10 to 160 mu g l(-1). The lineal regression equation is A = (0.0027 +/- 0.000 1) {[}NPA] + (0.0296 +/- 0.0047), r = 0.9991; relative standard deviation values obtained from the analysis of 10 samples of 10, 80 and 160 mu g l(-1) are 4.7, 1.2 and 0.6\%, respectively. The mean value relative errors for concentrations of 10, 80, 160 mu g l-1 are 3.4, 0.9 and 0.4\%, respectively. The detection and quantification limits were 1.1 and 3.7 mu g l(-1). A sampling throughput of 14 injections per hour is achieved. The repeatability calculated for five different C 18 disks was E-rel = 2.8\%. The proposed technique has been validated by replicate analysis (n = 6) of several water samples with spiked NPA, giving satisfactory results. (c) 2006 Elsevier B.V. All rights reserved.es_ES
Doihttps://doi.org/10.1016/j.aca.2005.12.049es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/6307
IdiomaInglés[20]es_ES
EditorialELSEVIER SCIENCE BVes_ES
RelaciónAnalytica Chimica Actaes_ES
URL relacionadohttps://doi.org/10.1016/j.aca.2005.12.049es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteAnalytica Chimica Acta
Palabra clavemultisyringe flow injection analysis (MSFIA)es_ES
Palabra clavereflectance sensores_ES
Palabra claveoptosensores_ES
Palabra clave1-naphthylamine (NPA)es_ES
Palabra claveGriess reactiones_ES
Palabra claveC18 diskses_ES
Palabra clavewater sampleses_ES
TítuloOptical fiber reflectance sensor coupled to a multisyringe flow injection system for preconcentration and determination of 1-naphthylamine in water sampleses_ES
TipoPonenciaes_ES
ArbitradoHa sido Arbitradoes_ES
AutorMar, J. L. Guzman
AutorLopez Martinez, L.
AutorLopez de Alba, P. L.
AutorCastrejon Duran, J. E.
AutorCerda Martin, V.
AutorMar, J. L. Guzmanes_ES
AutorLopez Martinez, L.es_ES
AutorLopez de Alba, P. L.es_ES
AutorCastrejon Duran, J. E.es_ES
AutorCerda Martin, V.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
NúmeroSIes_ES
Rango de páginas406-412es_ES
URL relacionadahttps://doi.org/10.1016/j.aca.2005.12.049
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen573es_ES

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