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Artículo

Dispersive liquid–liquid microextraction based on solidification of floating organic drop and fluorescence detection for the determination of nitrated polycyclic aromatic hydrocarbons in aqueous samples

Guiñez, María EvangelinaIcon ; Martinez, Luis DanteIcon ; Fernandez, Liliana PatriciaIcon ; Cerutti, Estela SoledadIcon
Fecha de publicación: 03/2017
Editorial: Elsevier Science
Revista: Microchemical Journal
ISSN: 0026-265X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
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Resumen

In this study, a dispersive liquid–liquid microextraction method based on the solidification of a floating organic drop (DLLME-SFO) combined with molecular fluorescence detection was developed for the analysis of nitrated polycyclic aromatic hydrocarbons in environmental samples. Parameters affecting the efficiency of the extraction procedure were evaluated and optimized, including the nature of the dispersant agent, extractant and dispersant volumes, salt addition effect, and extraction time. Additionally, various strategies in the emulsion formation process were assayed. After optimization, the values obtained for limits of detection and quantification for 3-nitrofluoranthene were 2.3 ng mL− 1 and 5 ng mL− 1 respectively, and for 9-nitroanthracene 1.7 ng mL− 1 and 2.5 ng mL− 1. The recovery values ranged from 95% to 100% and the enrichment factor attained varied from 380 to 400-fold. The developed method was successfully applied to the analysis of lake water and drinking water samples. The results indicated that the proposed approach is a novel, sensitive, fast and reproducible methodology suitable for the analysis of traces of environmentally important nitrated polycyclic aromatic hydrocarbons in water samples.
Palabras clave: Dllme-Sfo , Fluorescence Detection , Nitrated Polycyclic Aromatic Hydrocarbons , Water Samples
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info:eu-repo/semantics/embargoedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/65804
DOI: https://doi.org/10.1016/j.microc.2016.10.020
Colecciones
Articulos(CCT - SAN LUIS)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SAN LUIS
Articulos(INQUISAL)
Articulos de INST. DE QUIMICA DE SAN LUIS
Citación
Guiñez, María Evangelina; Martinez, Luis Dante; Fernandez, Liliana Patricia; Cerutti, Estela Soledad; Dispersive liquid–liquid microextraction based on solidification of floating organic drop and fluorescence detection for the determination of nitrated polycyclic aromatic hydrocarbons in aqueous samples; Elsevier Science; Microchemical Journal; 131; 3-2017; 1-8
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