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- E-ISSN 2288-8985
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Electrochemical Studies on the Methylviologen-Sodium Dodecyl Sulfate Solution in the Presence of <TEX>$MgCl_2$</TEX>
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1998, v.11 no.3, pp.151-155
Ko,
Y. C., &
Chung,
K.
H.
(1998). Electrochemical Studies on the Methylviologen-Sodium Dodecyl Sulfate Solution in the Presence of <TEX>$MgCl_2$</TEX>. Analytical Science and Technology, 11(3), 151-155.
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Abstract
Electrochemical behaviours on 1.0 mM methylviologen (<TEX>$MV^{2+}$</TEX>) in 100 mM NaCl+27 mM <TEX>$MgCl_2$</TEX> solution, without and with sodium dodecyl sulfate (SDS), were studied. The intersection of two lines on <TEX>${\Delta}E_p$</TEX> (the difference between the anodic, <TEX>$E_{pa}$</TEX>, and the cathodic, <TEX>$E_{pc}$</TEX>, peak potentials) of the first and second redox waves vs. -log[SDS] plot was determined as a critical micelle concentration (CMC). When <TEX>$Mg^{2+}$</TEX> was added, the effective access of <TEX>$MV{\cdot}^+$</TEX> to the glassy carbon electrode surface became possible and the formation of micelles was retarded.
- keywords
- Methylviologen, Sodium dodecyl sulfate, Critical micelle concentration, Double layer, Ionic strength, Formation of micelles
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