Electroanalysis with Carbon Paste–Based Electrodes, Sensors, and Detectors - Electroanalysis with Carbon Paste Electrodes - page 416

TABLE 8.24 (continued)
Analysis of Biologically Important Compounds at Carbon Paste Electrodes: Purines, Pyridines, and Pyrimidines

Analyte Modiier Carbon Paste Techniques Comments Ref(s)

Uric.acid
Epinephrine
Folic.acid

2,2′-[1,2-Ethanediylbis.(nitriloethylidyne)]-
bis-hydroquinone.+.DWCNT

G/po CV,.CA,.DPV Catalytic.ox.;.simultaneous.det.;.PBS.

0.1.M,.pH.7;.LOD.8.8.μM;.s:.blood

[3016]

Uric.acid
Ascorbic.acid

Thionine.on.Naion G/Nj CV,.DPV Electrocatalytic.ox..by.thionine;.ABS.

0.1.M,.pH.5;.LOD.50.nM;.s:.urine,.serum

[1509]

Uric.acid Congo.red.on.Naion/MWCNT G/mo CV,.DPV ox.;.effects.of.AA.masked;.ABS.0.1.M,.

pH.5.and.PBS.0.1.M,.pH.7;.s:.urine,.
serum

[1513]

Uric.acid
Ascorbic.acid
Dopamine

Poly.(calconcarboxylic.acid),.electropolym. G/so CV Electrocatalytic.activity;.acetate.buffer,.

0.2.M,.pH.5.4

[135]

Uric.acid
NAD(P)H
8-Oxoguanine

Guanine.or.8-oxoguanine.(electroox.,.+1.1.V.
vs..SSE)

G/Nj DPV Signal.improvement;.universal.buffer,.

pH 8;.LOD.6.6.μM.(ua),.2.μM.(og)

[2876]

Uric.acid
Norepinephrine
Folic.acid

Chloranil.+.MWCNT G/po CV,.CA.(0.15.V.vs..SSE),.

DPV

Catalytic.ox.,.simultaneous.det.;.PBS.
0.1.M,.pH.7

[3022]

Uric.acid Uricase.+.TCNQ G/mo CV,.FIA.(0.34.V.vs..SSE) Tris.buffer.0.1.M,.pH.9;.s:.serum [590]

Uric.acid Uricase.+.β-cyclodextrin.+.MnO 2 .NP.+.Fc Biosensor,.synergistic.effect.of.MnO 2 .and.

Fc;.LOD.3.μM

[3132]

Uric.acid Uricase.+.poly( o -aminophenol).

(electropolym.)

CV,.FIA.(0.05.V.vs..SSE) Biosensor;.PBS.0.1.M,.pH.6.5.or.7.5.

(FIA);.LOD.3.μM;.s:.serum

[247]