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dc.contributor.authorGarcía-Mesa, J.C.
dc.contributor.authorMontoro Leal, P.
dc.contributor.authorVereda-Alonso, E.I.
dc.contributor.authorLópez Guerrero, M.M.
dc.contributor.authorSiles Cordero, M.T.
dc.contributor.authorGarcía de Torres, A.
dc.contributor.authorCano-Pavón, J.M.
dc.date.accessioned2019-05-29T08:51:08Z
dc.date.available2019-05-29T08:51:08Z
dc.date.created2019-06
dc.date.issued2019-05-29
dc.identifier.urihttps://hdl.handle.net/10630/17739
dc.description.abstractThe application of nanoparticles (NPs) in science and technology is a fast growing field. Therefore, reliable and straightforward analytical methods are required for their fast determination in different types of samples. In this work, a method that enables the determination of the average size of ZnO NPs, besides their concentration, discriminating them from ionic zinc, has been optimized. The method is based on solid sampling high-resolution continuum source electrothermal atomic absorption spectrometry (SS-HR-CS-GFAAS), and has been applied to determination and characterization of ZnO NPs in cosmetic samples. Recently, graphite furnace atomic absorption spectrometry has been introduced as a new tool to determine the size of nanoparticles by evaluation of the following parameters: atomization delay (tad) and atomization rate (kat). In this work both parameters (besides peak area) have been obtained from absorbance signals for a line of Zn with low sensitivity. Two multiple response surface designs have been used in order to optimize the adequate furnace program to achieve our aims. All the optimization experiments were performed using baby´s skin irritation protective cream. The optimized furnace program is shown in Table 1. Table 1. Optimized furnace program The size calibrations were performed against solid (powered) ZnO standards, from 50-nm to 500-nm sized nanoparticles. The correlation coefficients (R value) of the linear calibration were not worse than 0.9982. The optimized method was tested in other types of cosmetic samples such as eyeshadow samples with good results. The determination of the MNPs’ size was validated by transmission electron microscopy (TEM) and the Zn concentration in the solid samples was validated by atomic fluorescence spectroscopy (AFS). Acknowledgements (optional) [Garamond font, 10 points] The authors would like to thank Plan propio “Proyecto Puente” de la Universidad de Málaga for financial support of this work.en_US
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Techen_US
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectEspectrometría de absorción atómicaen_US
dc.subjectNanoparticulasen_US
dc.subject.otherZnOen_US
dc.subject.othersolid sampling high-resolution continuum source electrothermal atomic absorption spectrometryen_US
dc.titleSolid sampling determination of ZnO nanoparticles in eyeshadows by graphite furnace atomic absorption spectrometryen_US
dc.typeinfo:eu-repo/semantics/conferenceObjecten_US
dc.centroFacultad de Cienciasen_US
dc.relation.eventtitleANQUE2019en_US
dc.relation.eventplaceSantanderen_US
dc.relation.eventdateJunio 2019en_US
dc.rights.ccAttribution-NonCommercial-NoDerivatives 4.0 Internacional*


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