Abstract
The construction and characteristic performance of a PVC membrane electrode responsive for sodium dodecylsulfate (SDS) are described in this paper. The electrode based on CTA+DS− ion pair as ionophore in PVC membrane displays a Nernstian slope of −58.8 ± 0.7 mV/decade in a 1.32 × 10−6 to 3.75 × 10−3 mol L−1 concentration range and a limit of detection of 1.13 × 10−6 mol L−1. The electrode can be used for 3 months without showing significant changes in the value of slope or working range. The electrode has been utilized as an end point indicator electrode for potentiometric titration involving Hyamine as titrant. More than 100 titrations were carried out for the evaluation of the electrode parameters: the standard deviations of the equivalent volume and the equivalent potential, the height of the potential jump and the number of faulty titrations. The behavior of the electrode was assessed with regard to their usefulness in routine analysis.
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Published in Russian in Elektrokhimiya, 2013, Vol. 49, No. 11, pp. 1223–1228.
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Wang, J.W., Du, Z.P., Wang, W.X. et al. Anionic surfactant selective electrode for the titrimetric determination of anionic surfactant. Russ J Electrochem 49, 1101–1106 (2013). https://doi.org/10.1134/S1023193512090157
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DOI: https://doi.org/10.1134/S1023193512090157