Chemistry Reference
In-Depth Information
TABLE 8.24
Analysis of Biologically Important Compounds at Carbon Paste Electrodes: Purines, Pyridines, and Pyrimidines
Analyte
Modiier
Carbon Paste
Techniques
Comments
Ref(s)
Caffeine
G(atc..100°C)/
ceresin.wax
LSV
Paste.with.wide.anodic.range;.H
2
SO
4
,.
0.1.M
[39]
Caffeine
G/mo.or.graphite.
pencil
CV,.acc..(0.V.vs.),.SWASV
ox..at.around.1.4.V.vs..SSE;.PBS.0.1.M,.
pH.9
[3121]
Caffeine
Catechol
Bi
CNT/mo
LSV,.adSV.with.SWV
ox.;.simultaneous.det.,.for.brain.
electrochem.;.0.1.M.H
3
PO
4
.or.0.1.M.
NH
4
PO
3
;.LOD.0.18.μM
[3122]
Caffeine
Theophylline
Molecular.imprinted.poly(methacrylate)
G/eicosane.solid
acc..(oc.,.pH.7;.medium.
exchange)
ox.;.LOD.15.nM;.phosphoric.acid,.0.15.M;.
s:.cola,.tea
[1691]
Caffeine
Aspirin
Acetaminophen
Triton.X100.+.MWCNT
G/po
CV,.adSDPV,.acc..(−0.7.V.
vs..SSE,.300.s);.EIS
ox.,.simultaneous.determination;.PBS.
0.1.M,.pH.7;.LOD.88.nM;.s:.
pharmaceuticals,.coffee-based.drinks,.
cola
[3122]
Caffeine
(+DNA)
CNT
Enhanced.acc..at.DNA;.for.brain.
electrochem.;.LOD.0.35.μM.(DNA),.
51.μM.(without)
[430]
Caffeine
1,4-Benzoquinone
G/po
CV,.SWV
Suppression.of.benzoquinone.red..peak.
via.π-complex.formation;.LOD.0.3.μM
[1444]
Hypoxanthine
Mesoporous.TiO
2
G/po
CV,.SWV
Enhanced.ox..current;.PBS.0.1.M,.pH.7;.
LOD.50.nM;.s:.serum
[1875]
Hypoxanthine
Xanthine.oxidase.+.GA.+.BSA.(drop.coated)
Heated.(35°C)
CV,.ECL
Enhancement.of.CL.of.luminol.by.H
2
O
2
;.
PBS.0.2.M,.+luminol.20.μM,.pH.7;.
LOD 3.μM
[572]
Hypoxanthine
Xanthine.oxidase.+.GA.+.BSA.+.Au.NP.
(electrodep.)
A.(0.V.vs..SSE)
Biosensor;.PBS.0.05.M,.pH.7.4;.LOD.
0.22.μM;.s:.sardines,.chicken.meat
[945]
Hypoxanthine
Xanthine.oxidase.on.cellulose.acetate.+.
hydroxymethyl.Fc
G/p.liquid
CV,.A.(0.29.V.vs..SSE)
Biosensor;.PBS.0.1.M,.pH.7.8;.LOD.
0.6.μM;.s:.ish
[858]
Hypoxanthine
Methylviologen.on.montmorillonite.+.
xanthine.oxidase.in.polyaniline.ilm
CV
Biosensor;.det..by.red..of.H
2
O
2
;.PBS,.
pH 7;.LOD.0.8.μM;.s:.ish.meat
[1497]
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