NiO电极测糖和醇
2008-03-18228
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Nickel oxide-modified polymeric composite electrodewas prepared for electrochemical detection in liquid chromatography
(LC-ECD) or flow injection analysis of polyhydroxyl compounds. The composite electrode was prepared by incorporating
semigraphitic carbon black and nickel oxide particles in polystyrene polymer matrix cross-linked with divinylbenzene. The
analytical characteristics of the electrodes in LC-ECD and flow injection analysis of polyhydroxyl compounds were evaluated
in terms of sensitivity, reproducibility, stability and surface renewability. The electrode revealed threefour orders of dynamic
concentration ranges from sub-micromolar to 10−3Mwith high correlation coefficients from 0.9998 to 0.9999 for various polyhydroxyl
compounds. The standard deviation for the surface restoration was <2%. High reproducibility, stability, and the renewability
of surface are thought to be due to the catalyst particles highly dispersed through robust polymeric electrode matrix.
© 2002 Elsevier Science B.V. All rights reserved
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