The electrode, transport, selective properties and cross sensitivity of surfactant sensors based on various electrodeactive substances speak for their applicability in multisensor analysis. Permeability and ion flows of surfactants for ion-exchange membranes are estimated. Influence of the nature and concentration of electrode-active substances and the contacting solutions, membrane thickness on quantitative characteristics membrane transport is shown. The electrode, transport, and selective properties of surfactant membranes based on alkylpyridinium alkylsulfates and tetraphenylborate salts of complex cations of barium-polyethoxylate enable their usage in multisensor systems (electronic tongue). Arrays of solid-contact potentiometric sensors with a high cross sensitivity for separate detection of anionic and non-ionic surfactant homologues in multicomponent systems are designed. With the usage of multisensor surfactant systems and mathematical methods the ability of separate detection of homologous anionic and non-ionic surfactants in multicomponent model mixtures, natural waters and technical drugs is shown.
It was demonstrated that multisensor systems of the electronic tongue type based on nonselective solid-contact potentiometric sensors can be used for the separate determination of the homologues of nonionic surfactants-polyoxyethylated nonylphenols with different numbers of oxyethyl groups. The cross-sensitivity parameters were calculated for modified and unmodified sensors for nonionic surfactants. The artificial neural network method was used for processing analytical signals.
A method for estimating cationic surfactants in various surfactant-containing medicinal formulations for medical use (Calgel, Chlorhexidine, Hexicon, Psylo-Balsam, Nittifor) was developed. The method uses a potentiometric sensor based on cetylpyridinium dodecylsulfate. 224 0091-150X/08/4204-0224
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