Chemistry Reference
In-Depth Information
TABLE 8.2
Determination of Silver 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)
Ag
I
,.Au
III
C/Nj.(unm.)
LSV
Electrolytic.depos.
Anodic.reoxidn.
5.×.10
−9
-3.×.10
−7
.M.
(5.nM,.15.min)
Model.solns.
Simultaneous.detn..of.Ag
+
.+.Au
III
CPE:.unusual.bell-shaped.constr.
[12]
Ag
+
C/BRF.(unm.)
CV,.ASV
Electrolytic.depos.
Anodic.reoxidn.
(1.×.10
−8
.M;.5.min)
Model.solns.
s.e.:.0.1.M.ammonia.buffer
incl..interference.studies
[217]
Ag
+
C/Nj.(unm.)
CV,.ASV
Electrolytic.depos.
Anodic.reoxidn.
1-100.ng.mL
−1
.(2.×.
10
−9
.M;.5.min)
Model.solns.
s.e.:.0.2.M.KNO
3
,.RSD.=.±9%
Use.of.new.CPE-piston.holder
[31]
Ag
+
C/PO.(unm.)
LSV
Electrolytic.depos.
Anodic.reoxidn.
1.×.10
−10
-1.×.10
−8
.M;.
(0.1.nM;.20.min)
Ores,.wastewater,.
semiconductors
s.e.:.0.01.M.ammonia.buffer
No.interfs..from.Fe
III
,.Mn
II
,.Hg
II
,.
Cu
II
,.Bi
III
,.Pb
II
,.and.Zn
III
[2200]
Ag
+
C/Nj;.C/PW.
(AgX;.Ag
2
S)
POT
Equilibrium.potential.at.
liquid.membrane.ISE
(Ag
+
:.5.×.10
−5
.M)
Model.solns.
Applicable.also.to.detn..of.
X
−
.ions.(X.….Cl,.Br,.I);.strong.
oxidants.and.reductants.interf.
[36]
Ag
+
C/Nj.(
en, dien
.
ders.)
FIA-EC,.
LC-EC
compl..via.−NH
2
.groups
prcp..AgCl.and.cath..redn.
1.×.10
−11
-1.×.10
−7
.M.
(10.pM;.180.min)
Model.solns.
Prior.to.chem..immobilization,.
C-particles.were.ox..by.min..
acid.
[51]
Ag
+
C/Nj.(unm.)
DCV
Electrolytic.depos.
Anodic.reoxidn.
(5.ppm;.5.min)
Metallic.copper,.
alloy.ctng..Cu
interfs..suppressed.by.adding.
compl..DCTA.into.s.e.
[2201]
Ag
+
s-CPE.(C/Wx).
(AgI)
POT
Equilibrium.potential.at.
liquid.membrane.ISE
1.×.10
−4
-0.1.M
Model.solns.
CP.of.semisolid.character.(with.
parafin.wax.diss..in.chloroform)
incl..evaluation.of.select..coeffs.
[1964]
Ag
+
C/Nj.(zeolites)
DPV
accum..via.ion-exchange
Cathodic.redn.
(<1.mg.L
−1
;.3.min)
Model.solns.
Combined.with.MEx
simult..detn..of.Hg
II
.possible
[1131]
Ag
+
C/PO.(thiacrown.
cmpds)
DCV
compl..via.chelating
redn..and.anodic.reoxidn.
0.5-2.5.mM.(0.5.mM;.
5.min)
Model.solns.
Open.circuit.+.MEx
No.interfs..from.Cu
II
,.Cd
II
,.Ni
II
,.
Co
II
[1403]
Ag
+
C/Nj.(chelating.
resin)
DPV
compl..by.−NH−.groups
Cathodic.redn.
5.×.10
−10
-1.×.10
−7
.M.
(0.3.nM;.5.min)
Wastewater
s.e.:.opt..pH:.6.5-7.5
No.interfs..from.common.metals
[1677]
(
continued
)
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