Electroanalysis with Carbon Paste–Based Electrodes, Sensors, and Detectors - Electroanalysis with Carbon Paste Electrodes - page 382

TABLE 8.21 (continued)
Analysis of Biologically Important Compounds at Carbon Paste-Based Electrodes: Hormones, Phytohormones, Steroids,
and Related Compounds
Analyte Modiier Carbon Paste Techniques Comments Ref(s)

Thyroxine Polyvinylpyrrolidone G/po CV,.LSV,.CC ox..of.OH.of.T4;.NaOH.0.1.M.+.CTAB.60.μM;.LOD.80.nM [2940]

Thyroxine G/po CV,.EIS,.LSV;.acc..

(0.9.V.vs..SCE)

Signal.improvement.by.CTAB;.KCl.0.1.M [2000,2941,.

2942]

Thyroxine acc. Activation.by.anionic.surfactant;.LOD.60.nM.(acc..5.min);.

s:.urine

[2943]

l-Thyroxine Anti-L-T4 G/po SIA Immunosensor;.NaCl.0.1.M;.s:.pharmaceuticals [2944]

Xenoestrogens.
(phenolic)

AD.in.pressurized.
CEC

s:.chicken.egg,.milk.powder [563]

Steroids and derivatives
Bile.acids

CoPC Conductive.carbon.

cement

CV PBS.0.1.M,.pH.7;.quick.electrode.deactivation.in.low.

streams

[633]

Cholesterol HRP.+.BSA.+.GA.+.

hydroxymethyl.Fc

G/po CV,.CV.(0.V.vs..

SCE)

Cholesterol.oxidase.and.esterase.in.solution;.PBS.0.1.M.+.
Triton.X100,.0.35%,.pH.7.s:.serum

[1534]

Cholesterol HRP.+.GA.+.Pt G/po CV,.A.(−0.05.V.vs..

SSE)

PVC-reaction.cell.with.immobilized.cholesterol.esterase.
and.oxidase,.incubation,.det..via.H 2 O 2 ;.PBS.0.1.M,.pH.7;.
s:.serum

[2945]

Cholesterol Cholesterol.oxidase.+.Fc.+.

HRP.in.poly.(3-aminophenol),.
electropolym.

C/liquid.p A.(0.05.V.vs..SSE) Biosensor,.det..via.H 2 O 2 ;.PBS.0.1.M,.pH.7 [871]