Determination of non-ionic and anionic surfactants in environmental water matrices

Gómez, V.; Ferreres, Laura; Pocurull, Eva; Borrull, Francesc

doi:10.1016/j.talanta.2011.02.009

Cited by 69 publications

(41 citation statements)

References 27 publications

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“…They are more stable than ionic tensides and not sensitive to the pH and electrolytes of the aqueous systems in which they are involved. Currently, the non-ionic surfactants of the alkylphenyl polyethoxylate type (Triton X- n ) [5], where n can be within the range of 3–40, are the most widely used at the industrial scale. They are applied in household and industrial cleaning agents, paints and coatings, as well as utilized in the dye and textile industries as detergents, emulsifiers, wetting agents, solubilizers and dispersants [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

TiO2-Mediated Photocatalytic Mineralization of a Non-Ionic Detergent: Comparison and Combination with Other Advanced Oxidation Procedures

et al. 2015

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Triton X-100 is one of the most widely-applied man-made non-ionic surfactants. This detergent can hardly be degraded by biological treatment. Hence, a more efficient degradation method is indispensable for the total mineralization of this pollutant. Application of heterogeneous photocatalysis based on a TiO2 suspension is a possible solution. Its efficiency may be improved by the addition of various reagents. We have thoroughly examined the photocatalytic degradation of Triton X-100 under various circumstances. For comparison, the efficiencies of ozonation and treatment with peroxydisulfate were also determined under the same conditions. Besides, the combination of these advanced oxidation procedures (AOPs) were also studied. The mineralization of this surfactant was monitored by following the TOC and pH values, as well as the absorption and emission spectra of the reaction mixture. An ultra-high-performance liquid chromatography (UHPLC) method was developed and optimized for monitoring the degradation of Triton X-100. Intermediates were also detected by GC-MS analysis and followed during the photocatalysis, contributing to the elucidation of the degradation mechanism. This non-ionic surfactant could be efficiently degraded by TiO2-mediated heterogeneous photocatalysis. However, surprisingly, its combination with the AOPs applied in this study did not enhance the rate of the mineralization. Moreover, the presence of persulfate hindered the photocatalytic degradation.

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Section: Introductionmentioning

confidence: 99%

TiO2-Mediated Photocatalytic Mineralization of a Non-Ionic Detergent: Comparison and Combination with Other Advanced Oxidation Procedures

et al. 2015

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“…Therefore, it is essential to have the analytical methodologies for the determination of these compounds in the different environmental compartments in order to understand their distribution, behavior and final fate once they reach aquatic environments. Not many articles on the determination of AS and AES [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] in environmental matrices have been found in the literature. This could be explained by the limitations that these analytical techniques had until the last decade.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the lack of UV absorbance by AS and AES represents one of the main problems when trying to detect them by liquid chromatography with ultraviolet (LC-UV) or fluorescence detection (LC-FD). The use of LC coupled mass spectrometry (LC-MS) has become one the most powerful tools for surfactant analysis in environmental samples due to its specificity, unequivocal identification of compounds [16][17][18][19][20][21][22] without the interferences that limited the use of techniques such as LC-UV or LC-FD [23].…”

Section: Introductionmentioning

confidence: 99%

Determination of alcohol sulfates and alcohol ethoxysulfates in wastewater samples by liquid chromatography tandem mass spectrometry

Fernández-Ramos

Ballesteros

Blanc

et al. 2013

Microchemical Journal

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“…Such a sensor system enables the optimization of the rinsing and detergent dispensing processes in wash cycles and as a result, water consumption is decreased and safe levels of residual detergents in the laundry can be maintained. Significant research efforts have been directed towards the development of improved sensors that can measure residual detergents and surfactants [1] via titration [17], chromatography [18], voltammetry [19] and potentiometry [20]. Both titration and chromatography systems are difficult to integrate with washing machines; however, other sensor techniques such a voltammetric-based electronic tongue [19] or conductivity sensors have been proposed as solutions.…”

Section: Introductionmentioning

confidence: 99%

Surface acoustic wave based analytical system for the detection of liquid detergents

Vivancos¹,

Rácz²,

Cole³

et al. 2012

Sensors and Actuators B: Chemical

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A novel analytical sensing system has been designed for the characterization and discrimination of different detergents in water. This micro-sensor system could play a key role in the development of more efficient and environmentally-friendly washing machines by enabling the measurement of residual detergents. The sensing system comprises a dual shear-horizontal surface acoustic wave (SH-SAW) resonator sensor housed within a poly-dimethylsiloxane (PDMS) microfluidic chamber. Free and electrically-shorted SAW designs were used to analyze synthetic samples of liquid detergents with varying concentrations. Two anionic surfactants, namely sodium dodecylbenzene sulfonate and sodium laureth sulphate, and one non-ionic surfactant, polyoxyethylene (9.5) t-octylphenol have been studied. Dilution tests have been performed in order to determine the sensitivity or detection limit of this liquid sensing system and have been found to be ca. 10 ppm. The SAW based sensor system correctly classified all three detergents through the use of the transient signal response. Because the sensor operates without the need for a selective chemical or biological coating, it should be both robust and reliable. We believe that such technology could be used to make environmentallyfriendly and greener washing machines by minimizing the use of detergents and hot water.

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Determination of non-ionic and anionic surfactants in environmental water matrices

Cited by 69 publications

References 27 publications

TiO2-Mediated Photocatalytic Mineralization of a Non-Ionic Detergent: Comparison and Combination with Other Advanced Oxidation Procedures

TiO2-Mediated Photocatalytic Mineralization of a Non-Ionic Detergent: Comparison and Combination with Other Advanced Oxidation Procedures

Determination of alcohol sulfates and alcohol ethoxysulfates in wastewater samples by liquid chromatography tandem mass spectrometry

Surface acoustic wave based analytical system for the detection of liquid detergents

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