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International Journal of Analytical Chemistry
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International Journal of Analytical Chemistry
/
2018
/
Article
/
Tab 1
/
Research Article
Inexpensive Bismuth-Film Electrode Supported on Pencil-Lead Graphite for Determination of Pb(II) and Cd(II) Ions by Anodic Stripping Voltammetry
Table 1
Factors and respective lower and superior levels values.
Factors
Lower level (-)
Superior level (+)
Bi(III) concentration (mg L
ā1
)
150
250
Deposition potential (V)
-1.50
-1.10
Deposition time (s)
100
250