Validation and inter-laboratory study of selective hydride generation for fast screening of inorganic arsenic in seafood
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články
PubMed
30612652
DOI
10.1016/j.aca.2018.11.036
PII: S0003-2670(18)31392-8
Knihovny.cz E-zdroje
- Klíčová slova
- Certified reference materials, Inductively coupled plasma mass spectrometry, Inorganic arsenic, Interlaboratory comparison, Selective hydride generation, Speciation analysis,
- MeSH
- arsen analýza MeSH
- Decapoda (Crustacea) chemie MeSH
- Decapodiformes chemie MeSH
- hmotnostní spektrometrie metody MeSH
- kontaminace potravin analýza MeSH
- kyselina chlorovodíková chemie MeSH
- limita detekce MeSH
- měkkýši, korýši analýza MeSH
- mlži chemie MeSH
- mořské řasy chemie MeSH
- perchloráty chemie MeSH
- peroxid vodíku chemie MeSH
- potravní rybí proteiny analýza MeSH
- Squalidae MeSH
- vodík chemie MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- arsen MeSH
- kyselina chlorovodíková MeSH
- perchloráty MeSH
- Perchloric Acid MeSH Prohlížeč
- peroxid vodíku MeSH
- potravní rybí proteiny MeSH
- vodík MeSH
It is advisable to monitor and regulate inorganic arsenic (iAs) in food and feedstuff. This work describes an update and validation of a method of selective hydride generation (HG) with inductively coupled plasma mass spectrometry (ICP-MS) for high-throughput screening of iAs content in seafood samples after microwave-assisted extraction with diluted nitric acid and hydrogen peroxide. High concentration of HCl (8 M) for HG along with hydrogen peroxide in samples of a same concentration as used for extraction leads to a selective conversion of iAs to volatile arsine that is released and transported to the detector. A minor contribution from methylarsonate (≈20% to iAs) was found, while HG from dimethylarsinate, trimethylarsine oxide is substantially suppressed (less than 1% to iAs). Methodology was applied to Certified Reference Materials (CRMs) TORT-3, DORM-3, DORM-4, DOLT-4, DOLT-5, PRON-1, SQID-1 and ERM-CE278k, in some of them iAs has been determined for the first time, and to various seaweed samples from a local store. The results were always compared with a reference method and selectivity of iAs determination was evaluated. An inter-laboratory reproducibility was tested by comparative analyses of six fish and four seaweed samples in three European laboratories, with good agreement of the results. The method of HG-ICP-MS is sensitive (limit of detection 2 μg kg-1 iAs), well suited for screening of large number of samples and selective at iAs concentration levels at which maximum limits are expected to be set into EU legislation for marine samples.
Matís Research and Innovation Vinlandsleid 12 113 Reykjavik Iceland
National Research Council of Canada 1200 Montreal Road Ottawa Ontario K1A 0R6 Canada
Citace poskytuje Crossref.org
