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Extraction and Characterization of Surfactants from Atmospheric Aerosols

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Nonionic surfactant-selective electrode and its application for determination in real solutions.

Milan Sak-Bosnar¹, Dubravka Madunic-Cacic, Ruzica Matesic-Puac

¹Department of Chemistry, Josip Juraj Strossmayer University of Osijek, F. Kuhaca 20, HR-31000 Osijek, Croatia. milan.sak-bosnar@ptfos.hr <milan.sak-bosnar@ptfos.hr>

Analytica Chimica Acta

|March 28, 2007

Summary

A new electrode using a barium complex effectively detects nonionic surfactants, offering a sensitive method for detergent analysis. This advancement provides a reliable tool for quantifying these compounds in various applications.

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Accurate Determination of the Equilibrium Surface Tension Values with Area Perturbation Tests

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Published on: August 30, 2019

Area of Science:

Analytical Chemistry
Electrochemistry
Materials Science

Background:

Nonionic surfactants are widely used in detergents and industrial processes.
Accurate quantification of nonionic surfactants is crucial for quality control and environmental monitoring.
Development of selective and sensitive electrochemical sensors is an ongoing area of research.

Purpose of the Study:

To develop a novel liquid membrane electrode for the sensitive detection of nonionic surfactants.
To characterize the electrode's response and performance.
To evaluate the electrode's applicability in potentiometric titrations of surfactant-containing samples.

Main Methods:

Preparation of a PVC-plasticized membrane electrode incorporating a barium pseudocationic complex of a highly ethoxylated fatty alcohol polyglycol ether and tetraphenylborate.
Electrochemical characterization of the electrode's response to nonionic surfactants and interfering ions.
Potentiometric titration of various surfactant samples using the developed electrode as an end-point indicator.

Main Results:

The electrode demonstrated a positive linear non-Nernstian response to nonionic surfactants.
A low detection limit of 3.3 x 10(-7) mol dm(-3) was achieved for nonionic surfactants in a barium chloride solution.
The electrode showed minimal interference from common alkaline, alkaline earth, and heavy metal cations.
Successful application as an end-point indicator in potentiometric titrations of analytical and technical grade nonionic surfactants, detergent products, and commercial detergents.

Conclusions:

The developed barium complex-based electrode is a sensitive and selective sensor for nonionic surfactants.
The electrode's performance makes it suitable for the potentiometric determination of nonionic surfactants in complex matrices like detergents.
This research offers a valuable analytical tool for the quality control and analysis of nonionic surfactants.