Electroanalysis with Carbon Paste–Based Electrodes, Sensors, and Detectors - Electroanalysis with Carbon Paste Electrodes - page 224

TABLE 8.4 (continued)
Determination of Copper at Carbon Paste Electrodes, Sensors, and Detectors: Survey of Methods and Selected Studies

Form,
Species

Type of CPE
(Modiier)

Technique
(Mode)

Measuring Principles
(Method Sequences)

Linearity Range
(LOD; t ACC / t R ) Sample(s) Other Speciication (Remarks) Ref(s)

Cu 2+ C/PO.( SWy-2 ) DPASV accum..by.ion-exchange.

and.sorption;.elec..redn.
anodic.reoxidn.

Model.solns. SWy-2 :.Na-montmorillonite.(clay)

interfs..of.Pb 2+ .( c Pb : c Cu .=.10:1)

[1059]

sub-μM.level.(4.×.10 −8 .
M)

Cu + C/Nj.(rubeanic.

acid)

CV,.DPV accum..via.compl..after.

chem..redn..Cu II .→.Cu I

1.×.10 −7 -5.×.10 −6 .M.
(5 ×.10 −8 .M;.15.min)

CRM.(human.
urine)

CMCPE.regnt..by.anodic.cycling.in.
0.1.M.HNO 3

[1348]

Cu 2+ C/PO.(ADE) FIA-EC accum..via.compl..Under.

FIA.conds.;.elchem..detc.

2.×.10 −6 -2.×.10 −4 .M.
(1 ×.10 −6 .M,.4.min)

Model.solns. ADE:.1,2-bismethyl(2-aminocyclo.

pentenecarbodithiolate).ethane

[1341]

Cu 2+ C/Nj.(Sal-TSC) FIA-EC accum..via.compl..under.

FIA.conds;.volt..detc.

(1.×.10 −10 .M) CRM.(sea.

water),.tap.
water

Sal-TSC:.salicylaldehyde.
thiosemi-larbazone

[2237]

Cu 2+ C/Nj.(SiO 2 ) CV,.SWV o.c.-accum..via.compl.

MEx;.redn..+.reoxidn.

5.×.10 −9 -5.×.10 −6 .M.
(2 ×.10 −9 .M,.10.min)

Model.solns. s.e.:.ammonia.buffer,.0.1.M.HNO 3

incl..study.on.accum..mechanism

[1157]

Cu 2+ C/PO.(chitin) ASV accum..via.compl.;.MEx

redn..+.anodic.reoxidn.

3.×.10 −9 -9.×.10 −7 .M.
(1 ×.10 −9 .M)

Model.solns. accum..in.open.circuit

incl..study.on.accum..mechanism

[834]

Cu 2+ C/PO.(L 1 ,.L 2 ) POT Chelating.effect

Equilibrium.potential

1.×.10 −5 -0.01.M.
(pCu =.4.8-5.6)

solns..with.humic.
acids

L 1 ,L 2 :.macrocyclic.thiohydrazone.
and.thiosemicarbazone.ligands

[1406]

Cu 2+ ,.Pb 2+ C/PO.(TPSB) ASV accum..via.chelatation

redn.;.anodic.reoxidn.

1.×.10 −9 -1.×.10 −7 .M.
(2 ×.10 −10 .M;.20.min)

Natural.waters modif.:.pyruvaldehyde.bis-dibutyl.

thiosemicarbazone;.some.interfs..by.
Se IV ,.Sr 2+ ,.Ga 3+ ;.Pb 2+ .also.detn.

[1342]

Cu 2+ C/PO.(crown.

ethers)

DPASV accum..via.chelating.and.

intercalation.effect;.redn.
Anodic.reoxidn.

1-100.ppb Alcoholic.

beverages

Three.diff..sp..of.crown.ethers
incl..studies.on.interfs..from.Ni II ,.
Co II ,.Mn II ,.Fe III

[1399]