Determination of total arsenic and hydrophilic arsenic species in seafood.

Autor: Luvonga C; Chemical Sciences Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD, 20899, USA.; Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA., Rimmer CA; Chemical Sciences Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD, 20899, USA., Yu LL; Chemical Sciences Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD, 20899, USA., Lee SB; Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA.
Jazyk: angličtina
Zdroj: Journal of food composition and analysis : an official publication of the United Nations University, International Network of Food Data Systems [J Food Compost Anal] 2020 Nov 24; Vol. 96 (103729).
DOI: 10.1016/j.jfca.2020.103729
Abstrakt: Marine organisms are vital sources of staple and functional food but are also the major dietary route of human exposure to total arsenic. We surveyed the total arsenic content and the mass fractions of hydrophilic arsenic species from five different marine food types cutting across the food chain from microalgae, macroalgae, bivalve clam, crustaceans and finfish. Total arsenic was determined using inductively coupled plasma-mass spectrometry (ICP-MS) while arsenic speciation analysis was performed using high-performance liquid chromatography (HPLC) coupled to ICP-MS as the detector. The total arsenic contents ranged from 133 ± 11 ng/g to 26,630 ± 520 ng/g. The mass fractions of inorganic arsenic (iAs), arsenobetaine (AsB), dimethylarsinic acid (DMA), and the four commonly occurring arsenosugars (AsSugars) are reported. Extractable hydrophilic arsenic species accounted for 10 % (aquacultured shrimp) to 95 % (kelp) of the total arsenic. DMA was established to be a byproduct of the decomposition of AsSugars in acid extracts of samples known to contain these species.
Competing Interests: Declaration of Competing Interest The authors report no declarations of interest.
Databáze: MEDLINE
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