Chemistry Reference
In-Depth Information
TABLE 8.6 (continued)
Determination of Zinc, Thallium, Tin, Indium, Bismuth, Antimony, Arsenic, and Selenium 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
)
Other Speciication
(Remarks)
Ion, Species
Sample(s)
Ref(s)
As
III
,.As
V
C/PO.(hematite)
ASV
As
III
.reduced.at.pH.4,.As
V
.
at.pH.0.(both.at.
electrode);.anodic.
reoxidn.
5-50(70).ppb.As
III(V)
.
(As
III
:.5,.As
V
:.2.ppb)
Drinking.water,.
compost.lixiviate
Speciation.of.As
III
.+.As
V
.via.
the.way.of.electrode.
reduction;.Cu
II
.and.Bi
III
.
interfs..with.detn..of.As
V
[2299]
Se
IV
,.
Se
−
II
Se
IV
.(SeO
3
2−
)
C/PO.(diamino-2,.
3-naphthalene)
LSV
Adsorp..accum.;.MEx
redn..+.anodic.reoxidn.
(1.×.10
−7
.M;.20.min)
Model.solns.
s.e.:.(1).0.01.M.HCl.+.0.1.M.
KCl.(2).0.01.M.HNO
3
.+.
0.1.M.KNO
3
[1375]
Se
IV
.(SeO
3
2−
)
GTE.(with.CP-layer)
LSV
Electrolytic.accum..and.
redn.;.anodic.reoxidn.
1.×.10
−7
-1.×.10
−6
.M.
(8.×.10
−8
.M;.5.min)
Model.solns.
GTE:.graphite.thick-layer.el..
with.carbon.paste-like.
material
[2300]
Se
IV
.(SeO
3
2−
)
CP-ISE.
(CoTMeOPP)
POT.(dir.)
Chelate.formation.with.
modif.;.equilibrium.pot.
5.2.×.10
−5
-0.012.M.
(3-5.×.10
−5
.M;.
<15.s)
Na
2
SeO
3
.(s),.
mixt..of.Se
IV
/
Se
VI
,.pharm.
modif.:.Co
II
-porphyrin.der.;.
pH-dependent.response.
(for HSeO
3
−
.and.SeO
3
2−
);.
other.two.ISEs.also.tested.
[2301]
Se
−II
.(SeCN
−
)
C/PO.(Co
II
-Pc)
AD,.FIA
Anodic.oxidation.(with.
cathodic.reactivation)
0.2-20.mM.(0.1.mM;.
>5.s)
Model.solns..
(saliva.for.
SCN
−
)
Pc:.phthalocyanine;.PhB.
(pH 7)
Detn..together.with.SeO
3
2−
,.
SCN
−
,.SO
3
2−
,.S
2
O
3
2−
,.NO
2
−
,.
and.HAsO
3
2−
[652]
Search WWH ::
Custom Search