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A method was developed for the simultaneous detection of eight polyphenols (t‐resveratrol, (+)‐catechin, quercetin and p‐coumaric, caffeic, sinapic, ferulic, and gallic acids) by CZE with electrochemical detection. Separation of these polyphenols was achieved within 25 min using a 200 mM borate buffer (pH 9.4) containing 10% methanol as separation electrolyte. Amperometric detection of polyphenols...
In this work we report on the successful use of a composite prepared by dispersion of multi-wall carbon nanotubes (1–5μm length, 20–50nm diameter) and copper microparticles within mineral oil as detector for amino acids quantification in flow injection analysis and capillary electrophoresis. The resulting electrode displays a highly sensitive amperometric detection of amino acids, based on the copper...
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