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. Arsenic speciation in plants by HPLC-(UV)-HG-AFS: Optimisation of the extraction method and application to native plant species from soils polluted by mining activities Se ha optimizado el método de extracción de especies de arsénico hidrosolubles en muestras de planta...
  2. Virtual lab practice for quantitative analysis of metals in polluted soils En este trabajo se muestra el desarrollo de una práctica de laboratorio virtual de Experimentación Q...
  3. Application of ultrasound probe sonication for arsenic and heavy metal extraction in soils Se ha optimizado un método de extracción de arsénico y metales pesados en suelos contaminados proced...
  4. Single extraction tests for risk assessment of arsenic and heavy metals in polluted soils from mining activities Se presentan los resultados obtenidos en la aplicación de 3 métodos de extracción simple, para evalu...
  5. Degrading ability of Carbamacepine and Naproxene by a mircroorganism molecularly identified as Pseudomonas fluorescents. Assessment of ecotoxicity A third of the water available on our planet is used with agricultural, industrial and household usa...

Otros recursos de la mismacolección

  1. El tamaño de los hitos: breve historia de la pequeña escala Muchas de las revoluciones de la arquitectura se han experimentado primero en tamaños reducidos. Ent...
  2. Modelling land use and transport policies to measure their contribution to urban challenges: the case of Madrid. Urban areas play a key role in the development of European territories, and it is essential for them...
  3. Arsenic speciation in plants by HPLC-(UV)-HG-AFS: Optimisation of the extraction method and application to native plant species from soils polluted by mining activities Se ha optimizado el método de extracción de especies de arsénico hidrosolubles en muestras de planta...
  4. Sliding collapse in masonry structures: experimental tests Thirty-three static load tests were carried out in dry masonry walls. These walls have been subjecte...
  5. Evaluación y gestión del ordeño mediante soporte informático Al hablar de rutina de ordeño, se hacía referencia casi exclusivamente al concepto de repetición, de...

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.