Feedback‐amplified electrochemical dual‐plate boron‐doped diamond microtrench detector for flow injection analysis. Issue 16 (17th April 2015)

• Record Type: Journal Article
• Authors: Lewis, Grace E. M.; Gross, Andrew J.; Kasprzyk‐Hordern, Barbara; Lubben, Anneke T.; Marken, Frank
• Other Names: Escarpa Alberto guestEditor.; Pumera Martin guestEditor.
• Is Part Of: Electrophoresis. Volume 36:Issue 16(2015)
• Page Start: 1866
• Page End: 1871
• Publication Date: 2015-04-17
• Subjects: Boron‐doped diamond -- Chromatography -- Feedback amplification -- Oxygen -- Separation -- Quinine; Electrophoresis -- Periodicals; Electrophoresis -- Periodicals; 541.372
• DOI: 10.1002/elps.201500017
• Languages: English
• ISSNs: 0173-0835

Abstract

Abstract : An electrochemical flow cell with a boron‐doped diamond dual‐plate microtrench electrode has been developed and demonstrated for hydroquinone flow injection electroanalysis in phosphate buffer pH 7. Using the electrochemical generator‐collector feedback detector improves the sensitivity by one order of magnitude (when compared to a single working electrode detector). The diffusion process is switched from an analyte consuming "external" process to an analyte regenerating "internal" process with benefits in selectivity and sensitivity.