Speciation analysis of antimony in marine biota by HPLC-(UV)-HG-AFS: Extraction procedures and stability of antimony species

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dc.contributor.authorDe Gregori, Ida
dc.contributor.authorQuiroz, Waldo
dc.contributor.authorPinochet, Hugo
dc.contributor.authorPannier, Florence
dc.contributor.authorPotin-Gautier, Martine
dc.date.accessioned2025-01-21T01:05:24Z
dc.date.available2025-01-21T01:05:24Z
dc.date.issued2007
dc.description.abstractSpeciation analysis of antimony in marine biota is not well documented, and no specific extraction procedure of antimony species from algae and mollusk samples can be found in the literature. This work presents a suitable methodology for the speciation of antimony in marine biota (algae and mollusk samples). The extraction efficiency of total antimony and the stability of Sb(III), Sb(V) and trimethylantimony(V) in different extraction media (water at 25 and 90 degrees C, methanol, EDTA and citric acid) were evaluated by analyzing the algae Macrosystis integrifolia (0.55 +/- 0.04 mu g Sb g(-1)) and the mollusk Mytilus edulis (0.23 +/- 0.01 mu g Sb g(-1)). The speciation analysis was performed by anion exchange liquid chromatography (post-column photo-oxidation) and hydride generation atomic fluorescence spectrometry as detection system (HPLC-(UV)-HG-AFS). Results demonstrated that, based on the extraction yield and the stability, EDTA proved to be the best extracting solution for the speciation analysis of antimony in these matrices. The selected procedure was applied to antimony speciation in different algae samples collected from the Chilean coast. Only the inorganic Sb(V) and Sb(III) species were detected in the extracts. In all analyzed algae the sum of total antimony extracted (determined in the extracts after digestion) and the antimony present in the residue was in good agreement with the total antimony concentration determined by HG-AFS. However, in some extracts the sum of antimony species detected was lower than the total extracted, revealing the presence of unknown antimony species, possibly retained on the column or not detected by HPLC-(UV)-HG-A-FS. Further work must be carried out to elucidate the identity of these unknown species of antimony. (C) 2007 Elsevier B.V. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.talanta.2007.04.015
dc.identifier.eissn1873-3573
dc.identifier.issn0039-9140
dc.identifier.urihttps://doi.org/10.1016/j.talanta.2007.04.015
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95910
dc.identifier.wosidWOS:000250026400009
dc.issue.numero3
dc.language.isoen
dc.pagina.final465
dc.pagina.inicio458
dc.revistaTalanta
dc.rightsacceso restringido
dc.subjectspeciation
dc.subjectantimony
dc.subjectextraction
dc.subjectHPLC-HG-AFS
dc.subjectalgae
dc.subjectmollusk
dc.subject.ods03 Good Health and Well-being
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa03 Salud y bienestar
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleSpeciation analysis of antimony in marine biota by HPLC-(UV)-HG-AFS: Extraction procedures and stability of antimony species
dc.typeartículo
dc.volumen73
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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