dc.creator | de Vito, Irma Esther | |
dc.creator | Olsina, Roberto Antonio | |
dc.creator | Masi, Adriana Noemi | |
dc.date.accessioned | 2020-03-27T20:59:36Z | |
dc.date.accessioned | 2022-10-15T10:22:38Z | |
dc.date.available | 2020-03-27T20:59:36Z | |
dc.date.available | 2022-10-15T10:22:38Z | |
dc.date.created | 2020-03-27T20:59:36Z | |
dc.date.issued | 2000-10 | |
dc.identifier | de Vito, Irma Esther; Olsina, Roberto Antonio; Masi, Adriana Noemi; Enrichment method for trace amounts of rare earth elements using chemofiltration and XRF determination; Springer Verlag Berlín; Fresenius Journal Of Analytical Chemistry; 368; 4; 10-2000; 392-396 | |
dc.identifier | 0937-0633 | |
dc.identifier | http://hdl.handle.net/11336/101185 | |
dc.identifier | 1432-1130 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4375146 | |
dc.description.abstract | A preconcentration method for subsequent determination of rare earth elements (REE) by X-ray fluorescence (XRF) spectrometry was developed. The method is based on using (o-[3,6-disulfo-2-hydroxy-l-naphthylazo]-benzenearsonic acid) (Thorin) as acomplexing agent which is retained on a polyamide membrane by a chemofiltration process. The pH dependence of the chemofiltration of these metal ions on the membrane and other variables, such as flow-rate, contact time, kinetic of complex formation, etc. were determined. The membrane containing the chemofiltrate formed a thin film, which eliminated the interelemental effects when measured by XRF. The detection limits were 23, 23 and 49 ng/mL for Sm(III), Eu(III) and Gd(III), respectively. High enrichment factors were obtained. The method was successfully applied to the preconcentration of Sm(III), Eu(III) and Gd(III) from different samples. | |
dc.language | eng | |
dc.publisher | Springer Verlag Berlín | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs002160000504 | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s002160000504 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | THIN FILM | |
dc.subject | DETECTION LIMIT | |
dc.subject | RARE EARTH ELEMENT | |
dc.subject | COMPLEX FORMATION | |
dc.subject | CONTACT TIME | |
dc.title | Enrichment method for trace amounts of rare earth elements using chemofiltration and XRF determination | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |