Journal
TALANTA
Volume 110, Issue -, Pages 144-152Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2013.02.051
Keywords
Arsenic species; Arsenolipids; Fish; Herring; ESI-MS/MS; ICP-TOF-MS
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Funding
- National Council on Science and Technology (CONACyT, Mexico) [170548]
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Arsenolipids represent a relevant step in the biosynthesis of organoarsenicals from inorganic arsenic compounds. Their fate after human consumption is still uncertain. By means of a HPLC-ICP-MS/ESI-Q-TOF-MS method, 16 lipid soluble arsenic compounds, including seven formerly unknown organoarsenicals, have been identified in commercial herring fillet. The structural assignment was done by exact mass and high resolution MS/MS data. This is the first identification of arsenolipids in herring (Clupea harengus). They contribute with (3.6 +/- 0.2) mg kg(-1) arsenic to 62.3% of the total arsenic content of (5.7 +/- 0.3) mg of arsenic per kg dry mass. Current studies indicate that a metabolization by humans to cancerous dimethylarsinic acid is very likely. The presented results are highly relevant as herring is a very popular food fish species in Europe. Moreover, the screening of different fish species revealed that arsenolipids are more widespread than previously assumed. (C) 2013 Elsevier B.V. All rights reserved.
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