Electrochemical detector for liquid chromatographic analysis of

Details Electrochemical detector for liquid chromatographic analysis of Electrochemical detector for liquid chromatographic analysis of

1990-03-02

1991-07-16

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

204294, 204411, 422 70, 422 8201, 422 8203, 427123, 4271261, 4271262, 4271263, G01N 1500

Patent

active

050314491

ABSTRACT:
A highly sensitive and selective electrochemical detector has been developed for the liquid chromatograph analysis of carbohydrates. This detector includes copper particles and copper particles coated with copper oxide particles dispersed in a perfluorosulfonate ionomer film which is cast onto the surface of a glassy carbon electrode. The copper is electrochemically dispersed into the perfluorosulfonate ionomer by a constant potential method. The response of the detector is based on the electrolytic generation of a higher oxidation state species of copper catalytically oxidizing carbohydrates in alkaline solutions at a pH greater than 13.

REFERENCES:
patent: 4877694 (1989-10-01), Solomon et al.
patent: 4975172 (1990-12-01), Yeager et al.

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