English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/17135
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

High-Energy Polarised Beam Energy Dispersive X-Ray Fluorescence analysis combined with activated thin layers for Cd determination at trace levels in complex environmental liquid samples.

AutorMarguí, Eva ; Hidalgo, M.; Queralt Mitjans, Ignacio ; Van Grieken, R.; Van Meel, K.; Fontàs, Claudia
Fecha de publicaciónmar-2008
EditorAmerican Chemical Society
ResumenIn this paper, we describe a new method for trace level Cd determination in complex environmental liquid samples. Thin layers activated with the extractant Aliquat 336 were prepared either by direct impregnation of commercial polymeric supports or by physical inclusion in a cellulose triacetate matrix, and both were effectively used to collect Cd present at low concentration in different aqueous matrixes. Quantitation of Cd contained in the thin layers was performed by high-energy polarized-beam energy-dispersive X-ray fluorescence. The effects of various experimental parameters such as layer composition, equilibration time, and instrumental conditions have been investigated. The analysis of different impregnated layers contacted with solutions ranging from 5 to 8000 μg L-1 Cd showed a linear response between the Cd concentration in the aqueous solutions and the metal present in the thin layer, with a detection limit of 0.7 μg L-1. The accuracy of the proposed method was confirmed by analyzing spiked seawater samples and a synthetic water sample containing, besides Cd, high amounts of other metal pollutants such as Ni, Cu, and Pb. The attained results were comparable to those obtained by anodic stripping voltammetry or inductively coupled plasma spectrometry.
Versión del editorhttp://pubs.acs.org/doi/full/10.1021/ac7018427
Aparece en las colecciones: (ICTJA) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.