Lead ion-selective electrode prepared by sol–gel and PVC membrane techniques
Sol–gel electrode and coated-wire ion-selective electrode (CWISE) based on Schiff base as a neutral carrier, was successfully developed for detection of Pb(II) in aqueous solution. The sol–gel and CWISE exhibited linear response with Nernstian slope of 29.1 and 28.9 mV/decade, respectively, within t...
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Published in | Sensors and actuators. B, Chemical Vol. 107; no. 1; pp. 438 - 445 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
27.05.2005
|
Subjects | |
Online Access | Get full text |
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Summary: | Sol–gel electrode and coated-wire ion-selective electrode (CWISE) based on Schiff base as a neutral carrier, was successfully developed for detection of Pb(II) in aqueous solution.
The sol–gel and CWISE exhibited linear response with Nernstian slope of 29.1 and 28.9
mV/decade, respectively, within the concentration ranges of 5.0
×
10
−6 to 1.0
×
10
−1
mol
L
−1 lead ion for sol–gel and coated. The sol–gel and CWISE has shown detection limits of 3.0
×
10
−6 and 5.0
×
10
−6
M, respectively. The electrodes exhibited good selectivities over a number of alkali, alkaline earth, transition and heavy metal ions. Those sensors yielded steady potential within 10–20
s at linear dynamic range. The electrodes are suitable for use in aqueous solutions in a wide pH range of 4.0–8.2. Applications of those electrodes for determination of lead in real samples and as indicator electrode for potentiometric titration of Pb
2+ ion using K
2CrO
4 are reported. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0925-4005 1873-3077 |
DOI: | 10.1016/j.snb.2004.10.036 |