Electroanalysis with Carbon Paste–Based Electrodes, Sensors, and Detectors - Electroanalysis with Carbon Paste Electrodes - page 220

TABLE 8.3 (continued)
Determination of Mercury at Carbon Paste Electrodes, Sensors, and Detectors: Survey of Methods and Selected Studies

Type of CPE
(Modiier)

Technique
(Mode)

Measuring Principles
(Method Sequences)

Linearity Range
(LOD; t ACC / t R )

Form (Species) Sample(s) Other Speciication (Remarks) Ref(s)

Hg 2+ C/PO.

(EBHMP)

POT.(dir.) Chemical.equilibrium.and.

steady-state.potential.for.
Hg 2+ .↔.Hg II -compl.

3.×.10 −7 -0.01.M.
(1 ×10 −7 .M)

Wastewater.
(spiked);.
amalgam

EBHMP:.ethyl-2-(benzoylamino)-3-
(2-hydroxy-4-methoxyphenyl)-2-
pro-penoate;.s.e.:.pH.1-4,. t R :.<.5.s

[1326]

Hg 2+ C/PO.(SIAMT) CV,.

DPASV

accum..via.sorption.and.
complex.;.redn..+.reoxidn.

1-20.μg.L −1 .(0.1.μg.
L −1 ;.15.min)

Wastewater.
(spiked);.
amalgam

SIAMT:.silica.gel.functionalized.with.
2-aminothiazole;.var..s.e.

[1829,.
1837]

Hg 2+ C/PO.( SWy-12 /

MATD)

LSV,.
LC-EC

accum..via.sorption.and.
complexation;.redn.

(10.μg.L −1 ;.—) Model.solns. SWy-12/MATD:.Na-montmorillonite.

+.2-mercapto-5-amino-1,3,4-
thiadiazole;.clay.of.natural.origin.
(deposit)

[2220]

Hg 2+ C/PO.(DTSA) POT.(dir.) Chemical.equilibrium.and.

steady-state.potential.for.
Hg II -HA.↔.Hg II -compl.

1.×.10 −7 -3.×.10 −4 .M.
(2 × 10 −8 .M)

Model.solns. DTSA:.dithiosalicylic.acid;.HA:.

humic.acid.(competitive.ligand)
Evaluation.of.stability.constants

[2221]

Hg 2+ C/Nj.(chitosan,.

CHS)

CV,.
DPASV

accum..via.sorption.and.
complex.;.redn.+.reoxidn.

1.×.10 −6 -4.×.10 −5 .M.
(6 × 10 −7 .M;.4.min)

Water.samples.
(spiked)

CP-composition:.60%.(m/m).C.+.
20%.PO.(Nujol).+.20%.(m/m).CHS
s.e.:.0.2.M.KNO 3 .(pH.6.2)

[1709]

Hg 2+ C/PO.

( Cryptoix )

ASV accum..via.complexation

el..redn./anodic.reoxidn.

—.(0.1.μg.L −1 ) Model.solns. Cryptoix :.commercial.reagent.(with.

ion-exchange.capabilities)

[2222]