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Usma CL, Renamayor CS, Pacios IE. Structural behavior of the lamellar mesophase formed by ternary mixtures of a two-tailed ionic liquid, 1-decanol and water. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sak-Bosnar M, Matesic-Puac R, Madunic-Cacic D, Grabaric Z. New Potentiometric Sensor for Determination of Low Levels of Anionic Surfactants in Industrial Effluents. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.100289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The new surfactant sensor based on tetrahexadecylammonium dodecylsulfate as sensing ion-exchange complex, incorporated in plasticised PVC-membrane, has been used for potentiometric titration of low level anionic surfactants. The sensor exhibited near Nernstian response for dodecylsulfate (55.7 mV/decade) in the range 1.4·10−6 −5.6·10−3 mol/L and 57.3 mV/decade for dodecylbenzensulfonate in the range 1.9·10−6 −1.6·10−3 mol/L There are no significant interferences from organic and inorganic anions, commonly used in surfactant based industrial and household formulations at anionic surfactant potentiometric determination. The solutions of low levels (down to 10−5 mol/L) anionic surfactants (dodecylbenzensulfonate and dodecylsulfate) were successfully titrated with 1,3-didecyl-2-methylimidazolium chloride as standard cationic titrant. The sensor was used for determination of anionic surfactants in diluted industrial detergent products and industrial waste waters. The results obtained agree satisfactory with standard extraction-spectrophotometric MBAS method and are comparable with those obtained using a commercial surfactant electrode.
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Affiliation(s)
- M. Sak-Bosnar
- Department of Chemistry, “Josip Juraj Strossmayer” University of Osijek, F. Kuhaca 20, HR-31000 Osijek, Croatia
| | - R. Matesic-Puac
- Department of Chemistry, “Josip Juraj Strossmayer” University of Osijek, F. Kuhaca 20, HR-31000 Osijek, Croatia
| | - D. Madunic-Cacic
- Saponia Chemical, Pharmaceutical and Foodstuff Industry, M. Gupca 2, HR-31000 Osijek, Croatia
| | - Z. Grabaric
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia
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