HPLC-HG-ICP-MS: a sensitive and selective method for inorganic arsenic in seafood
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The addition of an online post-column hydride generation (HG) step to the commonly used high-performance liquid chromatography inductively coupled plasma-mass spectrometry (HPLC-ICP-MS) setup for arsenic speciation proved to significantly improve the detection limits for the determination of inorganic arsenic (iAs) as arsenate in seafood samples, where the limit of detection and limit of quantification were found to be 0.0004 and 0.0014 mg kg−1, respectively with HG. HG as an additional step further added to the selectivity of the determination of the iAs species and increased the detection and quantification of low levels of iAs (<0.002 mg kg−1) in samples with complicated matrices.
KeywordsSpeciation Analytical chemistry Seafood Arsenic Inorganic CRM Feed Fish meal
We thank Rannis (The Icelandic Research Fund for Graduate Students), Matís, the Collage of Physical Sciences at Aberdeen University, the SORSAS award (Scottish Overseas Research Student Awards Scheme) and the TESLA research fund for providing support. The Síldarvinnslan hf (SVN) and Vinnslustöðin hf (VSV) in Iceland are further acknowledged for the samples provided.
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