Determination of silver nanoparticles in complex aqueous matrices by total reflection X-ray fluorescence spectrometry combined with cloud point extraction
dc.contributor.author
dc.date.accessioned
2018-05-22T07:07:10Z
dc.date.available
2018-05-22T07:07:10Z
dc.date.issued
2018-03-01
dc.identifier.issn
0267-9477
dc.identifier.uri
dc.description.abstract
The development of methods for the analysis of silver nanoparticles (AgNPs) is of special relevance to achieve detailed insights into the fate, transport and exposure of these emerging pollutants in the environment. In the present contribution, for the first time, the possibilities and drawbacks of cloud point extraction (CPE) in combination with total reflection X-ray fluorescence spectrometry (TXRF) have been evaluated for the determination of AgNPs content in soil and consumer product water extracts. The experimental conditions for the separation and preconcentration of AgNPs with different coatings (PVP, PEG and citrate) and sizes (40-100 nm) were evaluated, paying attention to possible modifications required by the characteristics of the TXRF technique. Single particle inductively coupled plasma mass spectrometry (SP-ICPMS) analysis of the same aqueous extracts was also carried out in order to confirm the presence and percentage of AgNPs. Good agreement with respect to AgNPs concentrations in the analysed soil extracts was obtained between CPE-TXRF and SP-ICPMS, confirming the absence of matrix effects for this type of sample by CPE. On the contrary, large discrepancies were found between both analytical approaches for the studied consumer product water extracts. SP-ICPMS analysis evidenced the presence of ionic silver with a heterogeneous mixture of different sizes including relatively large Ag particles ( > 100 nm). This fact was also verified by SEM-EDS analysis. The results from this study highlight the necessity to study in more detail the effectiveness of existing methodologies (including CPE-based methods and SP-ICPMS) for the monitoring of AgNPs in complex aqueous matrices involving mixtures of different NPs sizes and coatings
dc.description.sponsorship
The Spanish Ministry of Economy and Competitiveness financed this work through the project CGL2013-48802-C3-2-R
(Program 2014). L. Torrent gratefully acknowledges a FPI grant from the Spanish Ministry of Science and Innovation (Ref. BES-2014-070625)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry (RSC)
dc.relation
info:eu-repo/grantAgreement/MINECO//CGL2013-48802-C3-2-R/ES/EVALUACION DE LOS EFECTOS DEL USO DE AGUAS NO CONVENCIONALES EN LA ZONA NO SATURADA Y SATURADA. ENFOQUE MULTIDISCIPLINAR/
dc.relation.isformatof
Reproducció digital del document publicat a: https://doi.org/10.1039/C7JA00335H
dc.relation.ispartof
© Journal of Analytical Atomic Spectrometry, 2018, vol. 33, núm. 3, p. 383-394
dc.relation.ispartofseries
Articles publicats (D-Q)
dc.rights
Tots els drets reservats
dc.title
Determination of silver nanoparticles in complex aqueous matrices by total reflection X-ray fluorescence spectrometry combined with cloud point extraction
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
028105
dc.contributor.funder
dc.type.peerreviewed
peer-reviewed
dc.relation.ProjectAcronym
dc.identifier.eissn
1364-5544