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A comparison of three methods for the convenient determination of SDS in aqueous solutions
YKI – Ytkemiska institutet.
1998 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 198, 261-265 p.Article in journal (Refereed)
Abstract [en]

Three methods for determining the concentration of sodium dodecyl sulfate (SDS) in aqueous solutions have been investigated. The first was to titrate SDS by cetyltrimethylammonium bromide (CTAB), where the endpoint (corresponding to 1:1 neutralization) was determined by measuring the potential drop between a surfactant ion selective electrode and a silver/silver chloride reference electrode. The second was to measure the endpoint of an analogous titration by following the formation of the insoluble CTAB/SDS complex with turbidimetry. The third was to measure the turbidity of a solution as a function of SDS concentration in the presence of myristyltrimethylammonium bromide (MTAB). Of these methods, which all provide a reasonable assessment of the SDS concentration, the last was certainly the fastest and most convenient, particularly for large numbers of samples.

Place, publisher, year, edition, pages
1998. Vol. 198, 261-265 p.
Keyword [en]
Sodium dodecyl sulfate, cetyltrimethylammonium bromide, myristyltrimethylammonium bromide, surfactant selective electrode, turbidity, mixed aggregate formation, determination, titration
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26726OAI: oai:DiVA.org:ri-26726DiVA: diva2:1053729
Note
A1175Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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