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- W68432022 abstract "Abstract: A simple, sensitive, and rapid analytical method is reported for the determination of surfactants. This is based on the use of an oppositely charged dye as the ion pair to form an ionic associate with the surfactant in a vessel, thus affording ion-associated adhesion on the inner wall of the vessel. After the adhesion, the remaining solution in the vessel is removed, and the ionic associate is dissolved in a suitable solvent. The absorbance of the resulting solution is measured spectrophotometrically to determine the concentration of the surfactant. Further, the mechanism of adhesion is elucidated. Key words: Anionic surfactants, soap, nonionic surfactants, cationic surfactants, simple determination. 1. Introduction Surfactants have industrial and agricultural applications in addition to domestic uses such as laundry and dish washing. Besides creating unsightly bubbles that mar landscapes, surfactants flowing into waterway can cause aquatic toxicity. Among the four main types of surfactants, anionic, nonionic, cationic, and amphoteric, most commonly used are anionic and nonionic surfactants and thus are produced in large quantities. Many methods are available for the analysis of anionic [1], nonionic, and cationic surfactants [2]. In the spectrophotometric determination of these surfactants, synthetic anionic surfactants are determined by the solvent extraction method using methylene blue and ethyl violet as the ion pairs and chloroform and toluene as the extraction solvent, respectively. Nonionic surfactants are determined by the extraction-spectrophotometric method with cobalt tetrathiocyanate as the ion pair and benzene as the solvent [3]. However, these methods are cumbersome," @default.
- W68432022 created "2016-06-24" @default.
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- W68432022 date "2013-01-01" @default.
- W68432022 modified "2023-09-27" @default.
- W68432022 title "Overview of Simple Test for Determination of Surfactants by Adhesion Method" @default.
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