Impedance spectroscopy analysis in a complex system: Sodium dodecyl sulfate solutions

Neto, João Mariz Guimaraes; Cunha, Helenilza Ferreira Albuquerque; Neto, José Machado Moita; Ferreira, G. F. Leal

doi:10.1007/s10971-006-6350-1

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…Thus there are two lines and their intersection point marks the critical micelle concentration (CMC) (Nakamura et al, 1998;Neto et al, 2006;Chang et al, 1998). There is a strong presumption that the optimum detergent concentration Figure 13.…”

Section: Conclmentioning

confidence: 99%

Electrochemical analysis of water and suds by impedance spectroscopy and cyclic voltammetry

Gruden¹,

Buchholz²,

Kanoun

2014

J. Sens. Sens. Syst.

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Abstract. Optimum detergent dosage during a washing process depends on water quality, degree of pollution and quantity of laundry. Particularly, water quality is an important factor. Other parameters like carbonate-or non-carbonate hardness and calcium / magnesium (Ca / Mg) ratio in addition to total hardness of water have an impact on the amount of detergent. This work discusses the possibilities realizing a detergent sensor that measures important parameters for the washing process and assess the ideal necessary amount of detergent during the washing process. The approach is to combine impedance spectroscopy with cyclic voltammetry in order to determine both water quality and concentration of detergent in the suds which build up the basis for an optimum detergent dosage. The results of cyclic voltammetry show that it is possible to identify the Ca / Mg ratio and the carbonate hardness separately, which is necessary for the optimization of the washing process. Impedance measurements identify total hardness and detergent concentrations.

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Section: Conclmentioning

confidence: 99%

Electrochemical analysis of water and suds by impedance spectroscopy and cyclic voltammetry

Gruden¹,

Buchholz²,

Kanoun

2014

J. Sens. Sens. Syst.

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“…Die Untersuchung der Eigenschaften einer Vielzahl verschiedener erhältlicher Waschmittel wurde dabei als wesentliches Kriterium für die Nutzbarkeit des Verfahrens aufgeführt. Die Impedanzspektroskopie als elektrisches Verfahren wurde ebenfalls zur Untersuchung von Tensidlösungen angewendet [6,7]. Dabei konnten die Leitfähigkeit und die dielektrischen Eigenschaften mit guter Genauigkeit bestimmt werden [8].…”

Section: Stand Der Technikunclassified

“…Die Kapazität der Leitfähigkeitsmesszelle steigt mit der Ionenkonzentration. Ein ähnliches Verhalten wurde ebenfalls in[7] beobachtet und auf veränderte Polarisationseigenschaften der Wassermoleküle zurückgeführt. Die Messwerte für die Kapazität weisen eine strake Streuung auf.…”

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6.2.4 Anwendungspotential der Impedanzspektroskopie für die Waschlaugensensorik

Tröltzsch¹,

Kanoun²,

Gruden³

et al. 2012

Tagungsband

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Use of Electrical Impedance Spectroscopy as a Practical Method of Investigating the Formation of Aggregates in Aqueous Solutions of Dyes and Surfactants

Melo

2011

J. Phys. Chem. B

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Molecular aggregation plays a key role in the physicochemical properties of dyes and surfactants. In this work, we show that electrical impedance spectroscopy (EIS) provides a practical method for the investigation of processes such as micellization in surfactants and dye dimerization. The electrical characterization of the structural phase transitions associated with aggregation events in these systems allows an accurate and direct determination of relevant parameters such as the corresponding critical concentrations for micelle formation and dimerization of these types of molecules, without the need of recurring to the use of auxiliary probe or reporter molecules. Because of its competitive advantages with respect to currently used methods (such as conductimetry and spectroscopic techniques), we argue that when implemented along the procedures described in this work, EIS becomes a simple and convenient technique for the characterization of aggregation processes in soft matter.

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Impedance spectroscopy analysis in a complex system: Sodium dodecyl sulfate solutions

Cited by 8 publications

References 5 publications

Electrochemical analysis of water and suds by impedance spectroscopy and cyclic voltammetry

Electrochemical analysis of water and suds by impedance spectroscopy and cyclic voltammetry

6.2.4 Anwendungspotential der Impedanzspektroskopie für die Waschlaugensensorik

Use of Electrical Impedance Spectroscopy as a Practical Method of Investigating the Formation of Aggregates in Aqueous Solutions of Dyes and Surfactants

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