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dc.contributor.authorPouran, Hamid
dc.contributor.authorPérez-Colodrero, Rosario Mercedes 
dc.contributor.authorWu, Shuang
dc.contributor.authorHix, Gary B.
dc.contributor.authorZakharova, Julia
dc.contributor.authorZhang, Hao
dc.date.accessioned2021-03-04T10:11:07Z
dc.date.available2021-03-04T10:11:07Z
dc.date.created2021
dc.date.issued2020-01-09
dc.identifier.citationAnal. Methods, 2020, 12, 959–969es_ES
dc.identifier.urihttps://hdl.handle.net/10630/21019
dc.description.abstractStudying nanomaterials' ecotoxicology is not new but there are still gaps in our understanding of their fate in the environment. A major challenge is lack of reliable tools to measure available concentrations of nanoparticles (NPs) in soil and water. Diffusive gradients in thin-films (DGT) is a robust technique for measuring the concentrations of trace metals in the environment. We have also shown that it could be potentially developed for measuring ZnO NPs. To further investigate the suitability of DGT for measuring the available concentrations of NPs in soil and water we selected two model nanoparticles, Ag and TiO2, which are widely used and incorporated in different commercial products. We aimed to understand (1) if two of the DGT binding agents, Chelex®-100 and Metsorb™, could irreversibly retain our model NPs and if yes (2) what might be the differences between bound Ag and TiO2 NPs and Ag+ and Ti4+ cations. We used ATR-FTIR spectroscopy for this purpose and analysed the IR spectra using principal component analysis and linear discriminant analysis (PCA-LDA), as our pattern recognition tool. The results show that the DGT resins form chemical bonds with silver and titanium nanoparticles and their ionic forms. PCA-LDA demonstrates that the binding mechanisms are statistically different (95% confidence level) among the treatments. This study indicates DGT's potential for measuring the available concentrations of NPs in the environment and suggests that ATR-FTIR spectroscopy combined with computational analysis could potentially differentiate between chemical species that are retained simultaneously by the DGT device resin layer.es_ES
dc.language.isoenges_ES
dc.publisherThe Royal Society of Chemistryes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectContaminaciónes_ES
dc.subject.otherATR-FTIR spectroscopyes_ES
dc.subject.otherAges_ES
dc.subject.otherTiO2 nanoparticleses_ES
dc.subject.otherDGT techniquees_ES
dc.titleAssessment of ATR-FTIR spectroscopy with multivariate analysis to investigate the binding mechanisms of Ag and TiO2 nanoparticles to Chelex®-100 or Metsorb™ for the DGT techniquees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.centroFacultad de Cienciases_ES
dc.identifier.doi10.1039/c9ay02458a
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones_ES


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