Determination of Anionic Surfactants in Real Systems Using 1,3-Didecyl-2-Methyl-Imidazolium-Tetraphenylborate as Sensing Material

Madunić-Čačić, Dubravka; Sak-Bosnar, Milan; Matešić-Puač, Ružica; Grabarić, Zorana

doi:10.1166/sl.2008.040

Cited by 16 publications

(4 citation statements)

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“…The total content of anionic surface active compounds in environmental samples was determined with three techniques: spectrophotometry [22][23][24][25], potentiometric titrametration (PT) [58] and tensammetry [59].…”

Section: Final Determination Stepmentioning

confidence: 99%

Determination of Surfactants in Environmental Samples. Part II. Anionic Compounds

Olkowska¹,

Ruman²,

Kowalska³

et al. 2013

Ecological Chemistry and Engineering S

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Abstract:Surface active agents (SAA) with negative charge of polar group are named as anionic compounds. They are the main constituent of most products containing synthetic surfactants. The linear alkylbenzene sulfonates (LAS), alkyl ethoxysulfates (AES) and alkyl sulfates (AS) are typically applied from this class of compounds. Those surfactants are ingredients of household detergents and cleaners, laundry detergents, cosmetic etc. Moreover they can be applied in the paper, textile and tanning industry as optical brighteners, dispersant, wetting and suspending agents. They can be substrates in the formulation of different products like dyes, pigments, pesticides, exchange resins, plasticizers and pharmaceuticals. Anionic surfactants after use are passed into sewage-treatment plants, where they are partially degraded and adsorbed to sewage sludge (applied in agriculture fields). Finally, the anionic SAA or their degradation products are discharged into surface waters and onto bottom sediments, soils or living organisms. Therefore, it is important (widely application, bioaccumulation, toxicity for living organisms) to investigate the environmental fate of those class of compounds in more details. This research involves determination the concentration of anionic surfactants with use appropriated analytical techniques in environmental samples The official methodology for determination of anionic SAA in liquid samples is based on the ion-pair reaction of these analytes compounds with methylene blue (MB) and an extraction with toxic solvent chloroform. During isolation step of anionic compounds from solid samples are employed Soxhlet and ultrasonic-assisted extraction techniques with use of methanol or mixture of other organic solvents as extraction medium. To overcome disadvantages of those traditional techniques were applied following techniques at sample preparation step from liquid and solid matrices: solid-phase extraction (SPE) and solid-phases microextraction (SPME); accelerated solvent extraction (ASE), microwave-assisted extraction (MAE), supercritical fluid extraction (SFE), respectively. For estimate total concentration of anionic analytes in extracts the spectrophotometric technique is used (as official regulation). For determination concentration of individual analytes were applied gas (derivatization step requires) and liquid chromatography mainly with mass spectrometry technique. The presence of anionic surface active agents was confirmed in various ecosystems (liquid and solid environmental samples).

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Section: Final Determination Stepmentioning

confidence: 99%

Determination of Surfactants in Environmental Samples. Part II. Anionic Compounds

Olkowska¹,

Ruman²,

Kowalska³

et al. 2013

Ecological Chemistry and Engineering S

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“…Potentiometry with ion-selective electrodes (ISE) used as sensors is a simple, fast and inexpensive method for determining surfactants and avoids most of the limitations of classical titrimetric methods [3][4][5][6][7][8][9]. Flow-injection analysis was also used for potentiometric determination of anionic surfactants [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Modelling and optimization of surfactant sensor response characteristics for the use in surface water and wastewater analysis

Komanovic-Stanisavljev¹,

Perić-Grujić²,

Sak-Bosnar³

2014

Zas Mat

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“…In this paper, theoretical models for potentiometric titration curves of some ionic and nonionic surfactants are proposed and their estimations of response parameters for a few surfactant sensors are reported. Previously described liquid membrane surfactant-sensing electrodes [19][20][21] were used to generate potentiometric experimental data, which were then incorporated into calculations using mass and charge balance equations. [22][23][24][25][26] The models were optimized using Solver (Microsoft Excel) and Wolfram Research Mathematica v. 7.1.…”

Section: Introductionmentioning

confidence: 99%

Estimation and Optimization of Potentiometric Sensor Response Parameters from Surfactant Titration Data Using Microsoft Excel <I>Solver</I> and <I>Mathematica</I>

Sak-Bosnar¹,

Madunić-Čačić²,

Sakač³

et al. 2011

Sen Lett

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Theoretical models for potentiometric titration curves of some ionic and nonionic surfactants are proposed in this paper. The experimental data were compared with appropriate theoretical curves in which the sensor response parameters and analyte properties (sensor slope, constant potential term, solubility product constant, analyte concentration) were estimated and optimized with Solver (Excel) and Wolfram Research Mathematica using least-squares criterion to fit theoretical curves to an experimental data set. The initial parameter settings were defined, and no constraints on the variables were applied. The macro SolvStat provided the regression statistics of the Solver, and these statistics were confirmed by the NonlinearModelFit macro of Wolfram Research Mathematica by calculation of the standard deviations of the parameters, correlation coefficients and standard errors of the y estimate SE(y. The two software tools gave almost the same estimates of the parameter models and the corresponding statistics. The theoretical models fit satisfactorily to the experimental values for all of the investigated surfactants.

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Determination of Anionic Surfactants in Real Systems Using 1,3-Didecyl-2-Methyl-Imidazolium-Tetraphenylborate as Sensing Material

Cited by 16 publications

References 0 publications

Determination of Surfactants in Environmental Samples. Part II. Anionic Compounds

Determination of Surfactants in Environmental Samples. Part II. Anionic Compounds

Modelling and optimization of surfactant sensor response characteristics for the use in surface water and wastewater analysis

Estimation and Optimization of Potentiometric Sensor Response Parameters from Surfactant Titration Data Using Microsoft Excel <I>Solver</I> and <I>Mathematica</I>

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