000060410 001__ 60410 000060410 005__ 20200221144312.0 000060410 0247_ $$2doi$$a10.1016/j.chroma.2016.02.036 000060410 0248_ $$2sideral$$a94099 000060410 037__ $$aART-2016-94099 000060410 041__ $$aeng 000060410 100__ $$0(orcid)0000-0002-9279-9299$$aSánchez-García, L. 000060410 245__ $$aSize determination and quantification of engineered cerium oxide nanoparticles by flow field-flow fractionation coupled to inductively coupled plasma mass spectrometry 000060410 260__ $$c2016 000060410 5060_ $$aAccess copy available to the general public$$fUnrestricted 000060410 5203_ $$aFacing the lack of studies on characterization and quantification of cerium oxide nanoparticles (CeO2 NPs), whose consumption and release is greatly increasing, this work proposes a method for their sizing and quantification by Flow Field-flow Fractionation (FFFF) coupled to Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Two modalities of FFFF (Asymmetric Flow- and Hollow Fiber-Flow Field Flow Fractionation, AF4 and HF5, respectively) are compared, and their advantages and limitations discussed. Experimental conditions (carrier composition, pH, ionic strength, crossflow and carrier flow rates) are studied in detail in terms of NP separation, recovery, and repeatability. Size characterization of CeO2 NPs was addressed by different approaches. In the absence of feasible size standards of CeO2 NPs, suspensions of Ag, Au, and SiO2 NPs of known size were investigated. Ag and Au NPs failed to show a comparable behavior to that of the CeO2 NPs, whereas the use of SiO2 NPs provided size estimations in agreement to those predicted by the theory. The latter approach was thus used for characterizing the size of CeO2 NPs in a commercial suspension. Results were in adequate concordance with those achieved by transmission electron microscopy, X-ray diffraction and dynamic light scattering. The quantification of CeO2 NPs in the commercial suspension by AF4-ICP-MS required the use of a CeO2 NPs standards, since the use of ionic cerium resulted in low recoveries (99 ± 9% vs. 73 ± 7%, respectively). A limit of detection of 0.9 µg L-1 CeO2 corresponding to a number concentration of 1.8 × 1012 L-1 for NPs of 5 nm was achieved for an injection volume of 100 µL. 000060410 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CTQ2012-38091-C02-01 000060410 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000060410 590__ $$a3.981$$b2016 000060410 591__ $$aCHEMISTRY, ANALYTICAL$$b11 / 76 = 0.145$$c2016$$dQ1$$eT1 000060410 591__ $$aBIOCHEMICAL RESEARCH METHODS$$b16 / 77 = 0.208$$c2016$$dQ1$$eT1 000060410 592__ $$a1.463$$b2016 000060410 593__ $$aAnalytical Chemistry$$c2016$$dQ1 000060410 593__ $$aOrganic Chemistry$$c2016$$dQ1 000060410 593__ $$aMedicine (miscellaneous)$$c2016$$dQ1 000060410 593__ $$aBiochemistry$$c2016$$dQ1 000060410 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000060410 700__ $$0(orcid)0000-0001-5382-0561$$aBolea, E.$$uUniversidad de Zaragoza 000060410 700__ $$0(orcid)0000-0002-4169-0357$$aLaborda, F.$$uUniversidad de Zaragoza 000060410 700__ $$0(orcid)0000-0003-0723-7417$$aCubel, C. 000060410 700__ $$aFerrer, P. 000060410 700__ $$aGianolio, D. 000060410 700__ $$ada Silva, I. 000060410 700__ $$0(orcid)0000-0002-4070-8607$$aCastillo, J.R.$$uUniversidad de Zaragoza 000060410 7102_ $$12009$$2750$$aUniversidad de Zaragoza$$bDpto. Química Analítica$$cÁrea Química Analítica 000060410 773__ $$g1438 (2016), 205-215$$pJ. chromatogr. A$$tJOURNAL OF CHROMATOGRAPHY A$$x0021-9673 000060410 8564_ $$s2355326$$uhttps://zaguan.unizar.es/record/60410/files/texto_completo.pdf$$yPostprint 000060410 8564_ $$s39620$$uhttps://zaguan.unizar.es/record/60410/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000060410 909CO $$ooai:zaguan.unizar.es:60410$$particulos$$pdriver 000060410 951__ $$a2020-02-21-13:37:50 000060410 980__ $$aARTICLE