Arsenic speciation in edible alga samples by microwave-assisted extraction and high performance liquid chromatography coupled to atomic fluorescence spectrometry

Garcia Salgado, Sara and Quijano Nieto, M. Angeles and Bonilla Simon, M. Milagros (2012). Arsenic speciation in edible alga samples by microwave-assisted extraction and high performance liquid chromatography coupled to atomic fluorescence spectrometry. "Analytica Chimica Acta", v. 714 (n. 10); pp. 38-46. ISSN 0003-2670. https://doi.org/10.1016/j.aca.2011.12.001.

Description

Title: Arsenic speciation in edible alga samples by microwave-assisted extraction and high performance liquid chromatography coupled to atomic fluorescence spectrometry
Author/s:
  • Garcia Salgado, Sara
  • Quijano Nieto, M. Angeles
  • Bonilla Simon, M. Milagros
Item Type: Article
Título de Revista/Publicación: Analytica Chimica Acta
Date: February 2012
ISSN: 0003-2670
Volume: 714
Subjects:
Faculty: E.U.I.T. Obras Públicas (UPM)
Department: Ingeniería Civil: Hidráulica y Energética [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 10754
DC Identifier: http://oa.upm.es/10754/
OAI Identifier: oai:oa.upm.es:10754
DOI: 10.1016/j.aca.2011.12.001
Official URL: http://www.sciencedirect.com/science/article/pii/S0003267011016369
Deposited by: Memoria Investigacion
Deposited on: 30 Apr 2012 08:32
Last Modified: 20 Apr 2016 18:59
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