000087551 001__ 87551
000087551 005__ 20200716101517.0
000087551 0247_ $$2doi$$a10.1002/elan.201800597
000087551 0248_ $$2sideral$$a110421
000087551 037__ $$aART-2019-110421
000087551 041__ $$aeng
000087551 100__ $$aHernández, D.
000087551 245__ $$aDetection and Determination of Released Ions in the Presence of Nanoparticles: Selectivity or Strategy?
000087551 260__ $$c2019
000087551 5060_ $$aAccess copy available to the general public$$fUnrestricted
000087551 5203_ $$aMetallic nanoparticles can release ionic species, but also both species can occur in the same samples. Therefore, there is a need of efficient and cost-effective methods to determine these ionic species in the presence of the corresponding nanoparticles. Electroanalytical techniques open the door to this selective detection of NPs and their ions. In this work, a methodology that allows the direct determination of ionic silver (Ag+) in the presence of silver nanoparticles based on anodic stripping voltammetry was implemented. Silver nanoparticles were determined, after acidic digestion of the sample, by difference with respect to the total content of silver. The method was validated in terms of specific identification of silver ions, linearity, working range, limit of detection, limit of quantification, recovery, repeatability and ruggedness. All parameters are adequate for an analytical method following Eurachem recommendations. The validated method was used to determine the concentration of Ag+ and total silver in two commercial products of colloidal silver. The results were compared with those obtained by atomic absorption spectrometry in combination with an ultrafiltration step for isolation of ionic silver. There were no significant differences in the results. The proposed methodology benefits from the intrinsic selectivity of the electroanalysis methods, allowing to eliminate the steps of pretreatments of the samples, which are necessary in other techniques. The novelty of the article lies in the direct determination of Ag (I) ions in the presence of AgNPs, without the use of previous separation steps.
000087551 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/CTQ2015-68094-C2-1-R
000087551 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000087551 590__ $$a2.544$$b2019
000087551 591__ $$aCHEMISTRY, ANALYTICAL$$b40 / 86 = 0.465$$c2019$$dQ2$$eT2
000087551 591__ $$aELECTROCHEMISTRY$$b16 / 27 = 0.593$$c2019$$dQ3$$eT2
000087551 592__ $$a0.651$$b2019
000087551 593__ $$aElectrochemistry$$c2019$$dQ2
000087551 593__ $$aAnalytical Chemistry$$c2019$$dQ2
000087551 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000087551 700__ $$0(orcid)0000-0003-3727-3275$$aCepriá, G.
000087551 700__ $$0(orcid)0000-0002-4169-0357$$aLaborda, F.$$uUniversidad de Zaragoza
000087551 700__ $$0(orcid)0000-0002-4070-8607$$aCastillo, J.R.$$uUniversidad de Zaragoza
000087551 7102_ $$12009$$2750$$aUniversidad de Zaragoza$$bDpto. Química Analítica$$cÁrea Química Analítica
000087551 773__ $$g31, 2 (2019), 405-410$$pElectroanalysis$$tElectroanalysis$$x1040-0397
000087551 8564_ $$s314626$$uhttps://zaguan.unizar.es/record/87551/files/texto_completo.pdf$$yPostprint
000087551 8564_ $$s27859$$uhttps://zaguan.unizar.es/record/87551/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000087551 909CO $$ooai:zaguan.unizar.es:87551$$particulos$$pdriver
000087551 951__ $$a2020-07-16-09:23:49
000087551 980__ $$aARTICLE