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An amperometric electrode based on multiwall carbon nanotubes (MWCNTs) and Fe nanoparticles (NPs) has been successfully fabricated. The electrode combined with Flow Injection Analysis (FIA) exhibits linear response in the concentration range of 0.1–12μM and the sensitivity of 30.0nAμM−1 for most of amino acids, confirming good complexation of amino acids (AAs) with Fe NPs on the modified electrode...
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