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A hollow‐fiber liquid‐phase microextraction (HF‐LPME) method was established for purification and enrichment of glutathione (GSH) in human saliva followed by a miniaturized capillary electrophoresis with amperometric detection system (mini‐CE‐AD). Based on regulating isoelectric point and increasing salt effect to modify donor phase, HF‐LPME could provide high enrichment efficiency for GSH up to 471...
A gold nanoparticle/reduced graphene oxide composite electrode (AuNP/rGO) was fabricated for the determination of the main bioamines and their precursor amino acids in beer based on a miniaturized capillary electrophoresis with amperometric detection system (mini-CE-AD). The surface morphology and structure of the synthetic AuNP/rGO material were observed by scanning electron microscope, energy dispersive...
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