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2026

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cc-by-nc-nd (c) Elsevier B.V., 2026
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/226040

Arsenosugars extracted from algae: Behavior study using dispersivesolid-phase extraction

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Recurs relacionat

https://doi.org/10.1016/j.chroma.2025.466528

Resum

The acquisition of reliable speciation data for dietary exposure assessment is challenged by the lack of calibration standards for arsenosugars, the predominant arsenic species in algae. This limitation hinders their accurate identification and quantification. The study investigated the retention and elution behavior of anionic arsenosugars (PO4-Sug, SO3-Sug and SO4-Sug) using various dispersive solid-phase (d-SPE) sorbents – SAX, PSA, and HILIC. The aim was to assess their suitability for isolating and preconcentrating these compounds from aqueous algae extracts, not for quantification purposes but as a strategy for subsequent standards preparation. Key parameters examined included extract pH, adsorption time, ionic strength, and elution solvent. d-SPE eluates were analyzed by ICP-MS for total arsenic and IC-ICP-MS for arsenic speciation. Among the sorbents tested, SAX was the most effective, achieving approximately 90 % retention of arsenosugars. Two consecutive elution steps with 0,5 % ammonium formate enabled recoveries ranging from 75 to 88 % of the retained compounds in the studied algae samples.

Matèries

Algues, Química analítica, Arsènic

Matèries (anglès)

Algae, Analytical chemistry, Arsenic

Citació

Col·leccions

Articles publicats en revistes (Nutrició, Ciències de l'Alimentació i Gastronomia)

Citació

MORALES-RODRÍGUEZ, Alba, et al. Arsenosugars extracted from algae: Behavior study using dispersivesolid-phase extraction. Journal of Chromatography A. 2026. Vol. 1765, num. 466528. ISSN 0021-9673. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/226040

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