Cyclic chronopotentiometric determination of sugars at Au and Pt microelectrodes in flowing solutions.
The main advantage of the application of cyclic chronopotentiometry (CCP) in end-column CE detection arises from the fact that the detection parameters and the magnitude of the analytical signal are (in contrast with other electrochemical detection methods) independent of the ohmic polarization of the solution caused by the separation current at the detection end of the capillary. CCP was used to determine sugars on platinum and gold microelectrodes after separation by CE. The results obtained with a gold microelectrode were better. Subsequently this detection method was used for quantitative determination of sugars in honeys and for their authentication.
Basa
Anna
A
Institute of Chemistry, University of Białystok, Hurtowa St. 1, 15-399 Białystok, Poland.
Magnuszewska
Jolanta
J
Krogulec
Tadeusz
T
Baranski
Andrzej S
AS
D002241:Carbohydrates / Q000032:analysis*; D019075:Electrophoresis, Capillary / Q000295:instrumentation* / Q000379:methods; D006046:Gold / Q000737:chemistry*; D008839:Microelectrodes; D010984:Platinum / Q000737:chemistry*; D015203:Reproducibility of Results
D002241:Carbohydrates; D010984:Platinum; D006046:Gold