Determination of nitrophenols in environmental samples using stir bar sorptive extraction coupled to thermal desorption gas chromatography-mass spectrometry

Pastor-Belda, M.; Sánchez-López, M.J.; Campillo, N.; Viñas López-Pelegrín, Pilar; Hernández Córdoba, Manuel

Publication:
Determination of nitrophenols in environmental samples using stir bar sorptive extraction coupled to thermal desorption gas chromatography-mass spectrometry

dc.contributor.author	Pastor-Belda, M.
dc.contributor.author	Sánchez-López, M.J.
dc.contributor.author	Campillo, N.
dc.contributor.author	Viñas López-Pelegrín, Pilar
dc.contributor.author	Hernández Córdoba, Manuel
dc.contributor.department	Química Analítica
dc.date.accessioned	2021-11-03T17:38:06Z
dc.date.available	2021-11-03T17:38:06Z
dc.date.issued	2018-11-01
dc.description.abstract	This paper presents a procedure for the determination of seven nitrophenols (NPs) in water and soil samples using stir bar sorptive extraction (SBSE) coupled to gas chromatography with mass spectrometry (GC-MS) by means of a thermal desorption unit (TDU). Microwave assisted extraction (MAE) is proposed to release the NPs from the soil matrices into an aqueous phase, prior to their acetylation. The different variables affecting the preconcentration efficiency of SBSE, during both the adsorption and the thermal desorption steps, are studied. As regards the analytical characteristics of the method, the accuracy was measured through recovery studies, recovery percentages in all cases being in the 79–120% range, as well as by analyzing a certified reference material. The precision was evaluated in terms of relative standard deviation, which provided values lower than 15% for both repeatability and reproducibility. The limits of detection were between 0.001 and 0.031 μg L−1 for water and 0.020–0.107 ng g−1 for soil samples. When environmental samples of different origins were analyzed, contents in the 0.01–1.0 μg L−1 and 0.7–40 ng g−1 ranges were obtained for waters and soils, respectively.	es
dc.format	application/pdf	es
dc.format.extent	37	es
dc.identifier.citation	Talanta, 2018, 189, 543-549
dc.identifier.doi	10.1016/j.talanta.2018.07.043
dc.identifier.issn	0039-9140
dc.identifier.uri	http://hdl.handle.net/10201/113651
dc.language	eng	es
dc.publisher	Elsevier	es
dc.relation	Nombre del proyecto: Advances in Analytical Chemistry: microextraction techniques for simplification and miniaturization of the analytical process. Código: 19888/GERM/15. Agencia/entidad financiadora: Comunidad Autónoma de Murcia. Ámbito Regional. Programa de Generación de conocimiento científico de Excelencia de la Fundación Séneca. Convocatoria 2015. Nombre del proyecto: Estrategias basadas en sistemas de microextracción para la mejora de la calidad del laboratorio analítico. Código: CTQ2015-68049-R. Agencia/entidad financiadora: Ministerio de Economía y Competitividad. Ámbito Nacional. Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia. Convocatoria 2015.	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Attribution-NonCommercial-NoDerivatives 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject	nitrophenols	es
dc.subject	soils	es
dc.subject	waters	es
dc.subject	stir bar sorptive extraction	es
dc.subject	thermal desorption	es
dc.subject	gas chromatography-mass spectrometry	es
dc.subject.other	CDU::5 - Ciencias puras y naturales::54 - Química::543 - Química analítica	es
dc.title	Determination of nitrophenols in environmental samples using stir bar sorptive extraction coupled to thermal desorption gas chromatography-mass spectrometry	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es