1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia


Opción 1: Descargar recurso

Detalles del recurso

Descripción

Twelve commercially available edible marine algae from France, Japan and Spain and the certified reference material (CRM) NIES No. 9 Sargassum fulvellum were analyzed for total arsenic and arsenic species. Total arsenic concentrations were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) after microwave digestion and ranged from 23 to 126 μg g−1. Arsenic species in alga samples were extracted with deionized water by microwave-assisted extraction and showed extraction efficiencies from 49 to 98%, in terms of total arsenic. The presence of eleven arsenic species was studied by high performance liquid chromatography–ultraviolet photo-oxidation–hydride generation atomic–fluorescence spectrometry (HPLC–(UV)–HG–AFS) developed methods, using both anion and cation exchange chromatography. Glycerol and phosphate sugars were found in all alga samples analyzed, at concentrations between 0.11 and 22 μg g−1, whereas sulfonate and sulfate sugars were only detected in three of them (0.6-7.2 μg g−1). Regarding arsenic toxic species, low concentration levels of dimethylarsinic acid (DMA) (<0.9 μg g−1) and generally high arsenate (As(V)) concentrations (up to 77 μg g−1) were found in most of the algae studied. The results obtained are of interest to highlight the need to perform speciation analysis and to introduce appropriate legislation to limit toxic arsenic species content in these food products.

Pertenece a

Archivo Digital UPM  

Autor(es)

Garcia Salgado, Sara -  Quijano Nieto, M. Angeles -  Bonilla Simon, M. Milagros - 

Id.: 55231230

Idioma: eng  - 

Versión: 1.0

Estado: Final

Tipo:  application/pdf - 

Palabras claveQuímica - 

Tipo de recurso: info:eu-repo/semantics/article  -  Artículo  -  PeerReviewed  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: http://creativecommons.org/licenses/by-nc-nd/3.0/es/

Formatos:  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Analytica Chimica Acta, ISSN 0003-2670, 2012-02, Vol. 714, No. 10
[References] http://oa.upm.es/10754/1/INVE_MEM_2012_96250.pdf
[References] http://www.sciencedirect.com/science/article/pii/S0003267011016369
[References] info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aca.2011.12.001

Fecha de contribución: 21-abr-2016

Contacto:

Localización:

Otros recursos del mismo autor(es)

  1. Una experiencia de CINE (Colaboración, Integración, Nivelación, Éxito) Se ha utilizado la herramienta del trabajo en grupo como una actividad para la nivelación de conocim...
  2. Estudios de especiación de arsénico y acumulación de metales en muestras de interés medioambiental : Arsenic speciation and metal accumulation studies in environmental samples Se ha estudiado la determinación de especies de arsénico y de contenidos totales de arsénico y metal...
  3. Arsenosugar phospholipids and arsenic hydrocarbons in two species of brown macroalgae Fourteen arsenolipids, including 11 new compounds, were identified and quantified in two species of ...
  4. Arsenic and heavy metal uptake and accumulation in native plant species from soils polluted by mining activities Arsenic and heavy metal (specifically Cd, Cr, Cu, Ni, Pb, and Zn) uptake, translocation, and accumul...
  5. Determination of soluble toxic arsenic species in alga samples by microwave-assisted extraction and high performance liquid chromatography-hydride generation-inductively coupled plasma-atomic emission spectroscopy A microwave-based procedure for arsenic species extraction in alga samples (Sargassum fulvellum, Chl...

Otros recursos de la misma colección

  1. Written on the threshold One of the most productive discoveries of art and architectural criticism is the comparative reading...
  2. Escrito en el umbral El paralelismo entre situaciones diversas es uno de los descubrimientos más fructíferos de la crític...
  3. Waves, analytical signals, and some postulates of quantum theory In this paper we apply the formalism of the analytical signal theory to the Schrödinger wavefunction...
  4. Cambios epigenéticos en ápices crioconservados de Mentha xpiperita La crioconservación ofrece una serie de ventajas sobre otros métodos para la conservación ...
  5. De novo assembly and annotation of a transcriptome during xylogenesis in Pinus canariensis Chr. Sm. ex DC Nowadays, there is a great amount of genomic and transcriptomic data available about forest species,...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.