Electroanalysis with Carbon Paste–Based Electrodes, Sensors, and Detectors - Electroanalysis with Carbon Paste Electrodes - page 243

Tl I ,.Tl III C/PO.(oxin) DPV Electrolytic.accum..of.Tl I .

(or.chem..red..Tl III );.
oxidn.

1.×.10 −7 -1.×.10 −6 .M.
(5.×.10 −9 .M,.120.s)

Model.solns..
(with.Tl I .+.Tl III )

interfs..from.Bi III ,.Pb II ,.and.
Cu II .supprd..by.masking.
with.EDTA

[1372]

Tl III ,.Tl 3+ C/PO.(oxin) DPV o.c.-accum..+.MEx

redn..(Tl III .→.Tl 0 );.reoxidn.

5.×.10 −10 -2.×.10 −5 .M.
(2.×.10 −10 .M,.120.s)

See.water,.human.
urine

s.e.:.(1).BR-buffer.(pH.4.6),.
(2).ammonia.buffer.(pH.10)

[1373]

Tl III ,.Tl x Cl n m− C/TCP.(CPy + Tl III Cl 4 − ) POT Ion-associate.formation;.

equilibrium.potential

6.×.10 −6 -0.003.M.
(6 × 10 −6 .M;.20.s)

Model.solns. CPy:.cetylpyridinium.ion.

(titrant)
Studies.on.compl..
stoichiometry

[253]

Tl I,.III ,.TlCl 4 − C/TCP.(unm.) CCSA accum..via.ion-pairing.as.

{H-TCP + ;.TlCl 4 − };.redn..
with. I CONST .=.−3.μA

0.1-1.0.μM.Tl III .
(1 × 10 −7 .M;.3.min)

Model.solns. TCP:.tricresyl.phosphate.

(binder);.s.e.:.0.1.M.HCl.+.
2.M.KCl;.study.on.
differentiation.of.Tl I .and.Tl III

[2384,.
2285]

Tl + ,.Cd 2+ ,.Pb 2+ C/SO.(+BiF,. in situ ) DPASV accum..onto.Bi.via.Me a Bi b .

alloy.formation;.reoxidn.

ca..200.μg.L −1 .Tl.(−) Model.solns. s.e.:.0.1.M.NaOH/KOH.(.pH.12) −

Study.on.complexation.
by OH

[637]

Tl + ,.Cd 2+ ,.Pb 2+ C/SO.(+BiF,. in situ ) DPASV accum..via.complexation,.

el..redn..+.alloy.formation
Anodic.reoxidn.

Model.solns. s.e.:.0.1-1.0.M.NaOH.(pH.>.

12);.studies.on.Tl-deposition.
at.BiFE.plated.from.
Bi(OH) 4 − ;.effect.of.Me 2+

[670]

ca..200.μg.L −1 .Tl.(−)

Tl + ,.Cd 2+ ,.Pb 2+ C/SO.(+Bi-powder) DPASV,.

SWASV

accum..via.complexation,.
el..redn..+.alloy.formation
Anodic.reoxidn.

100-250.μg.L −1 .Tl I .(−) Model.solns. s.e.:.0.1.M.AmB.(pH.9.5);.

study.on.behavior.of.Tl.+.Pb.
+.Cd.mixt..in.atypical.
supporting.media

[672]

Tl + .Me 2+ C/SO.(+SbF,. in situ ) PSA accum..onto.Bi.via.Me a Bi b .

alloy.formation;.reoxidn.

Model.solns. Sb III .added.serves.as.(i).

source.of.SbF,.(ii).for.
chemical.oxidn.;.s.e.:.
acidiied.KCl,.KBr;.Me:.
Zn, Cd,.Pb

[1994]

ca..50.μg.L −1 .Zn 2+ .(−)

Tl + ,.Zn 2+ ,.In 3+ C/SO.(+SbF;. in situ ) CCSA,.

(SWASV)

accum..via.electrolytic.
redn.,.Me a Bi b .alloy.form.
Anodic.reoxidn..by.Sb 3+

5-50.μg.L −1 .Tl.(1.4.μg.
L −1 .Tl;.120.s)

Model.solns. comp..to.MF-,.BiF-,.and.

SbF-CPE,.as.well.as.CCSA.
with.SWASV
s.e.:.0.01.M.HCl.(pH.2)

[1894,.
1996]

( continued )