Assessment of total arsenic and arsenic species stability in alga samples and their aqueous extracts

Garcia Salgado, Sara and Quijano Nieto, M. Angeles and Bonilla Simon, M. Milagros (2008). Assessment of total arsenic and arsenic species stability in alga samples and their aqueous extracts. "Talanta", v. 75 (n. 4); pp. 897-903. ISSN 0039-9140. https://doi.org/10.1016/j.talanta.2007.12.031.

Description

Title: Assessment of total arsenic and arsenic species stability in alga samples and their aqueous extracts
Author/s:
  • Garcia Salgado, Sara
  • Quijano Nieto, M. Angeles
  • Bonilla Simon, M. Milagros
Item Type: Article
Título de Revista/Publicación: Talanta
Date: May 2008
ISSN: 0039-9140
Volume: 75
Subjects:
Freetext Keywords: Alga; Arsenic stability; High performance liquid chromatography; Hydride generation; Inductively coupled plasma atomic emission spectroscopy
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

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (671kB) | Preview

Abstract

In order to achieve reliable information on speciation analysis, it is necessary to assess previously the species stability in the sample to analyse. Furthermore, in those cases where the sample treatment for species extraction is time-consuming, an assessment of the species integrity in the extracts is of paramount importance. Thus, the present paper reports total arsenic and arsenic species stability in alga samples (Sargassum fulvellum and Hizikia fusiformis), as well as in their aqueous extracts, which were stored in amber glass and polystyrene containers at different temperatures. Total arsenic determination was carried out by inductively coupled plasma atomic emission spectroscopy (ICP-AES), after sample acid digestion in a microwave oven, while arsenic speciation was conducted by anion exchange high performance liquid chromatography on-line coupled to ICPAES, with and without sample introduction by hydride generation (HPLC-ICP-AES and HPLC-HG-ICP-AES), after aqueous microwave-assisted extraction. The results obtained for solid alga samples showed that total arsenic (for Hijiki alga) and arsenic species present (As(V) for Hijiki and NIES No. 9 Sargasso) are stable for at least 12 months when samples are stored in polystyrene containers at +20 ◦C. On the other hand, a different behaviour was observed in the stability of total arsenic and As(V) species in aqueous extracts for both samples, being the best storage conditions for Sargasso extracts a temperature of −18 ◦C and polystyrene containers, under which they are stable for at least 15 days, while Hijiki extracts must be stored in polystyrene containers at +4 ◦C in order to ensure the stability for 10 days.

More information

Item ID: 2269
DC Identifier: http://oa.upm.es/2269/
OAI Identifier: oai:oa.upm.es:2269
DOI: 10.1016/j.talanta.2007.12.031
Official URL: http://www.sciencedirect.com/science/journal/00399140?oldURL=y
Deposited by: Memoria Investigacion
Deposited on: 12 Feb 2010 12:04
Last Modified: 20 Apr 2016 12:01
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM