2024-03-29T00:40:06Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/171652016-02-16T05:49:02Zcom_10261_82com_10261_8col_10261_335
2009-09-25T10:38:31Z
urn:hdl:10261/17165
Application of high-energy polarised-beam energy dispersive X-ray fluorescence spectrometry to cadmium determination in saline solutions.
Van Meel, K.
Fontàs, Clàudia
Van Grieken, R.
Queralt Mitjans, Ignacio
Hidalgo, M.
Marguí, Eva
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%.
2009-09-25T10:38:31Z
2009-09-25T10:38:31Z
2008-04
artículo
J.Anal.At.Spectrom. 23(7): 1034-1037 (2008)
0267-9477
http://hdl.handle.net/10261/17165
10.1039/b718382h
eng
http://www.rsc.org/delivery/_ArticleLinking/ArticleLinking.cfm?JournalCode=JA&Year=2008&ManuscriptID=b718382h&Iss=7
openAccess
Royal Society of Chemistry (UK)