Magnetic headspace adsorptive extraction of chlorobenzenes prior to thermal desorption gas chromatography-mass spectrometry

Por favor, use este identificador para citar o enlazar este ítem:
Registro completo de metadatos
Registro completo de metadatos
Campo DCValorIdioma
dc.contributorEspectroscopía Atómica-Masas y Química Analítica en Condiciones Extremases_ES
dc.contributor.authorVidal, Lorena-
dc.contributor.authorAhmadi, Mazaher-
dc.contributor.authorFernández Martínez, Elena-
dc.contributor.authorMadrakian, Tayyebeh-
dc.contributor.authorCanals, Antonio-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatologíaes_ES
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Materialeses_ES
dc.identifier.citationAnalytica Chimica Acta. 2017, 971: 40-47. doi:10.1016/j.aca.2017.04.002es_ES
dc.identifier.issn0003-2670 (Print)-
dc.identifier.issn1873-4324 (Online)-
dc.description.abstractThis study presents a new, user-friendly, cost-effective and portable headspace solid-phase extraction technique based on graphene oxide decorated with iron oxide magnetic nanoparticles as sorbent, located on one end of a small neodymium magnet. Hence, the new headspace solid-phase extraction technique has been called Magnetic Headspace Adsorptive Extraction (Mag-HSAE). In order to assess Mag-HSAE technique applicability to model analytes, some chlorobenzenes were extracted from water samples prior to gas chromatography-mass spectrometry determination. A multivariate approach was employed to optimize the experimental parameters affecting Mag-HSAE. The method was evaluated under optimized extraction conditions (i.e., sample volume, 20 mL; extraction time, 30 min; sorbent amount, 10 mg; stirring speed, 1500 rpm, and ionic strength, non-significant), obtaining a linear response from 0.5 to 100 ng L−1 for 1,3-DCB, 1,4-DCB, 1,2-DCB, 1,3,5-TCB, 1,2,4-TCB and 1,2,3-TCB; from 0.5 to 75 ng L−1 for 1,2,4,5-TeCB, and PeCB; and from 1 to 75 ng L−1 for 1,2,3,4-TeCB. The repeatability of the proposed method was evaluated at 10 ng L−1 and 50 ng L−1 spiking levels, and coefficients of variation ranged between 1.5 and 9.5% (n = 5). Limits of detection values were found between 93 and 301 pg L−1. Finally, tap, mineral and effluent water were selected as real water samples to assess method applicability. Relative recoveries varied between 86 and 110% showing negligible matrix effects.es_ES
dc.description.sponsorshipThe authors would like to thank the Spanish Ministry of Science and Innovation (project n. CTQ2011-23968), Generalitat Valenciana (project n. PROMETEO/2013/038) for the financial support. M. Ahmadi would like to thank Iranian Ministry of Science, Research, and Technology for the travel grant. E. Fernández thanks Spanish Ministry of Education for her FPU grant (FPU13/03125).es_ES
dc.rights© 2017 Elsevier B.V.es_ES
dc.subjectSolid-phase microextractiones_ES
dc.subjectMagnetic graphene oxidees_ES
dc.subjectMagnetic headspace adsorptive extractiones_ES
dc.subjectGas chromatography-mass spectrometryes_ES
dc.subjectWater sampleses_ES
dc.subject.otherNutrición y Bromatologíaes_ES
dc.subject.otherQuímica Analíticaes_ES
dc.titleMagnetic headspace adsorptive extraction of chlorobenzenes prior to thermal desorption gas chromatography-mass spectrometryes_ES
Aparece en las colecciones:INV - SP-BG - Artículos de Revistas

Archivos en este ítem:
Archivos en este ítem:
Archivo Descripción TamañoFormato 
Thumbnail2017_Vidal_etal_AnalytChimActa_final.pdfVersión final (acceso restringido)1,09 MBAdobe PDFAbrir    Solicitar una copia
Thumbnail2017_Vidal_etal_AnalytChimActa_revised.pdfEmbargo 24 meses (acceso abierto: 11 abr. 2019)1,29 MBAdobe PDFAbrir    Solicitar una copia

Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.