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10.1038/s41598-020-62212-7
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Título: | Speciation of chromium in waters using dispersive micro-solid phase extraction with magnetic ferrite and graphite furnace atomic absorption spectrometry |
Fecha de publicación: | 24-mar-2020 |
Editorial: | Springer |
Cita bibliográfica: | Scientific Reports |
ISSN: | 2045-2322 |
Materias relacionadas: | CDU::5 - Ciencias puras y naturales::54 - Química::543 - Química analítica |
Palabras clave: | waters chromium determination speciation dispersive solid-phase microextraction electrothermal atomic absorption spectrometry |
Resumen: | The combination of a solid-phase microextraction process with graphite furnace atomic absorption spectrometry provides a very sensitive determination method for determining chromium in waters. Freshly prepared ferrite particles are used to retain the chromium species, and then separated by a magnet without the need for a centrifugation step. The solid phase is suspended in water and directly introduced into the graphite furnace to obtain the analytical signal. The complexation of Cr(III) with ethylenediaminetetraacetate allows the selective retention of Cr(VI), and thus the speciation of the metal. The procedure is sensitive (0.01 µg L−1 detection limit when using a 10 mL sample aliquot) and reproducible (5% relative standard deviation for five consecutive experiments at the 0.3 µg L−1 level). The reliability of the procedure is verified by analysing five certified water samples. |
Autor/es principal/es: | López-García, Ignacio Marín-Hernández, Juan José Hernández Córdoba, Manuel |
Facultad/Departamentos/Servicios: | Facultad de Química, Departamento de Química Analítica |
Versión del editor: | https://www.nature.com/articles/s41598-020-62212-7 |
URI: | http://hdl.handle.net/10201/113626 |
DOI: | 10.1038/s41598-020-62212-7 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 26 |
Derechos: | info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional |
Aparece en las colecciones: | Artículos: Química Analítica |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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Scientific reports chromium.pdf | Chromium determination | 329,33 kB | Adobe PDF | Visualizar/Abrir |
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