Electroanalysis with Carbon Paste–Based Electrodes, Sensors, and Detectors - Electroanalysis with Carbon Paste Electrodes - page 390

TABLE 8.22 (continued)
Analysis of Biologically Important Compounds at Carbon Paste Electrodes: Neurotransmitters and Related Compounds

Analyte Modiier Carbon Paste Techniques Comments Ref(s)

Dopamine
Ascorbic.acid

Bis(4′-(4-pyridyl)-2,2′,6′,2″-.
terpyridine).iron(II).thiocyanate

G/po CV Decrease.of.ox..overpotential;.acetate.buffer,.

LOD.1.μM;.simultaneous.det..of.AA.and.DA;.
0.1.M,.pH.5;.s:.injection.solutions

[1617]

Dopamine 3-Mercaptopropyltrimethoxysilane.

Cu.encaps..in.mesoporous.
crystalline.molecular.sieve

Electrocatalytic.ox.;.also.on.microchip.CE;.LOD.
0.2.μM

[2982]

Dopamine
Ascorbic.acid

Co(II)-5-nitrosalophen.+.tetraoctyl.
ammonium.bromide

G/Nj CV,.DPV Catalytic.oxidation.via.Co(III);.simultaneous.

det.;.ABS.0.1.M,.pH.5;.LOD.0.5.μM;.
s: injections

[1583]

Dopamine
Serotonin
Phenols

CuPC.+.histidine G/mo A.(static.and.as.

RDE)

ox..via.Cu(II)-OOH(?);.det..via.red..of.quinine;.
PBS.0.25.M.+.H 2 O 2 .0.12.mM,.pH.6.9.LOD.
11.μM.(do).and.24.μM.(ser)

[519]

Dopamine Alcian.blue.(Cu II .PC.dye).

(+surfactant)

G/so CV Catalytic.oxidation;.improvement.by.surfactant.

(Triton.X100).0.2.M.PBS,.pH.6.6;.LOD.0.1.μM

[2983]

Dopamine
Ascorbic.acid

Fe(II)-tetrasulfo-PC G/mo LSV Simultaneous.det..of.ratio.DA/AA.via.potential.

shift;.pH.7.4;.LOD.0.45.μM

[1570]

Dopamine
Ascorbic.acid

CoPC.NP.(+CTAB) G/po CV,.DPV Catalytic.ox.;.simultaneous.det..possible.with.

CTAB;.PBS.0.025.M,.pH.7.4;.LOD.1.μM;.
s: injections

[933]

Dopamine
Uric.acid

Co(II)-octanitro.PC Catalytic.ox.;.simultaneous.det. [2984]

Dopamine
Serotonin

Fe(II)-tetrasulfo-PC G/mo CV,.SWV Catalytic.ox..via.Fe(III);.comparison.with.Co.

and.Ni.analogues;.Tris.buffer,.pH.7.4;.LOD.
ca.1.μM

[903]

Dopamine
Ascorbic.acid
Uric.acid

Fe(II)-octanitro.PC.+.CTAB G/so CV Simultaneous.det.;.PBS.+.KCl.0.1.M,.pH.7 [916]