Electroanalysis with Carbon Paste–Based Electrodes, Sensors, and Detectors - Electroanalysis with Carbon Paste Electrodes - page 348

TABLE 8.18 (continued)
Analysis of Biologically Important Compounds at Carbon Paste Electrodes: Phenolic Compounds and Antioxidants

Analyte Modiier Carbon Paste Techniques Comments Ref(s)

Phenol Tyrosinase.+.AuNP g.+.AuNP/po CV,.A.(−0.15.V.vs..SCE) Biosensor;.AuNP.for.tyrosinase.immobilization;.

reduction.of. o -quinone.PBS.0.1.M,.pH.7

[1275]

Phenol Core-shell.MgFe 2 O 4 -SiO 2 /

NH 2 .NP.+.GA.+.tyrosinase

g/p.(solid) CV,.A.(−0.15.V.vs..SCE) Biosensor.with.magnetic.NP;.red..of.generated.quinone;.

PBS.0.05.M,.pH.7;.LOD.0.6.μM

[979]

Phenol Extract.soy.bean.seed.hulls A Biosensor.via.peroxidase;.pH.7.4 [2777]

Phenols A.(0.8.V.vs..SSE);.detector.

in.pCEC

LOD.2-50.ng.mL −1 [563]

Xenoestrogens s:.chicken.egg,.milk.powder

Phenols Mesoporous.TiO 2 .NP g/po CV Enhanced.sensitivity.by.TiO 2 .NP;.0.1.M.NaCl [994]

Phenols Bentonite g/mo DPV.in.FIA.with.stopped.

low

s:.sea.water [2696]

Phenols Tyrosinase.(+.

carbodiimide/+.GA/+.
BSA)

G/po AD.in.HPLC.(−0.05.V.vs..

SSE)

Biosensor.by.oxidation.of.phenols.to.quinines.via.
catechols.and.detection.of.quinone;.PBS.0.1.M.+.Tween.
80.(0.025%),.pH.6.0;.comparison.with.graphite.
electrode;.s:.wastewater.(pulp.industry)

[2778]

Phenols
Phenol
Epicatechin
Ferulic.acid

Polyphenol.oxidase.+.
polypyrrole. in situ

G/Nj/pyrrole CV,.A.(−0.2.V.vs..SCE) Biosensor;.polypyrrole.created. in situ .in.the.paste;.PBS.

0.1.M

[1798,.
1800]

Phenols
Catechols

Tyrosinase.+.sodium.
hexadecanesulfonate

Biosensor.for.solvents.with.high.organic.liquid.content.
(methanol,.acetonitrile);.s:.pharmaceuticals

[2779]

Phenols β-Cyclodextrin G/po CV,.DPV;.oc.acc acc..via.complex.with.dextrin [1411]

Phenols Tyrosinase.+.maltodextrin.+.

PEI.+.Naion.membrane

A.(−0.1.V.vs..SCE) Biosensor;.LOD.50.nM;.pH.5.4;.s:.wastewater [2780,.

2781]

Phenols Tyrosinase.+.Os-mediator G/Nj CV,.FIA Biosensor;.comparison.of.commercial.tyrosinases [2782]

Phenols CuPC.+.histidine G/mo A.(static.and.as.RDE) Based.on.chemistry.of.dopamine.β-hydroxylase;.PBS.

0.25.M.+.H 2 O 2 .0.12.mM,.pH.6.9.LOD.9.μM

[519]