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Application of high-energy polarised beam energy dispersive X-ray fluorescence spectrometry to cadmium determination in saline solutions

In the present work, the analytical performance of a methodology based on a preconcentration using activated thin layers followed by high-energy polarised beam energy-dispersive XRF spectrometry (HE-P-EDXRF) for the determination of trace amounts of Cd in saline solutions is presented. Linear calibration curves were obtained over the range 5-8000 μg L-1 of Cd. When comparing the developed method to the direct analysis of Cd in sea water, the detection limits were improved by several orders of magnitude, with values of 2.25 μg L-1 (Al2O3 target) and 0.075 μg L -1 (CsI target), respectively. The accuracy was checked by analyzing spiked natural sea water at Cd concentrations of 20, 100 and 600 μg L -1 and results were compared to those obtained with anodic stripping voltametry and no significant differences at the 95% confidence level were found. The method has a good reproducibility over the investigated period of time and the precision of the method was better than 10%

This research has been developed in the framework of the Spanish National Research Programme (Projects: CGL2004-05963-C04/HID and CGL2007-66861-C4)

Royal Society of Chemistry (RSC)

Manager: Ministerio de Ciencia y Tecnología (Espanya)
Author: Fontàs Rigau, Clàudia
Van Grieken, René
Queralt i Mitjans, Ignasi
Hidalgo Muñoz, Manuela
Marguí Grabulosa, Eva
Abstract: In the present work, the analytical performance of a methodology based on a preconcentration using activated thin layers followed by high-energy polarised beam energy-dispersive XRF spectrometry (HE-P-EDXRF) for the determination of trace amounts of Cd in saline solutions is presented. Linear calibration curves were obtained over the range 5-8000 μg L-1 of Cd. When comparing the developed method to the direct analysis of Cd in sea water, the detection limits were improved by several orders of magnitude, with values of 2.25 μg L-1 (Al2O3 target) and 0.075 μg L -1 (CsI target), respectively. The accuracy was checked by analyzing spiked natural sea water at Cd concentrations of 20, 100 and 600 μg L -1 and results were compared to those obtained with anodic stripping voltametry and no significant differences at the 95% confidence level were found. The method has a good reproducibility over the investigated period of time and the precision of the method was better than 10%
This research has been developed in the framework of the Spanish National Research Programme (Projects: CGL2004-05963-C04/HID and CGL2007-66861-C4)
Format: application/pdf
Document access: http://hdl.handle.net/10256/12715
Language: eng
Publisher: Royal Society of Chemistry (RSC)
Collection: info:eu-repo/semantics/altIdentifier/doi/10.1039/b718382h
info:eu-repo/semantics/altIdentifier/issn/0267-9477
info:eu-repo/semantics/altIdentifier/eissn/1364-5544
MICYT/PN 2004-2007/CGL 2004-05963-C04/HID
info:eu-repo/grantAgreement/MEC//CGL2007-66861-C04-01/ES/MOVILIDAD Y DISTRIBUCION DE METALES EN LA ZONA NO SATURADA Y SUS EFECTOS SOBRE CAMBIOS DE CALIDAD DE AGUAS SUBTERRANEAS/
Rights: Tots els drets reservats
Subject: Anàlisi espectral
Spectrum analysis
Espectroscòpia de fluorescència
Photoelectron spectroscopy
Espectroscòpia de raigs X
X-ray spectroscopy
Title: Application of high-energy polarised beam energy dispersive X-ray fluorescence spectrometry to cadmium determination in saline solutions
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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