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Updated: Sep 26, 2025

Extraction and Characterization of Surfactants from Atmospheric Aerosols
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A Simplified Method for Anionic Surfactant Analysis in Water Using a New Solvent.

Jung-Hwan Yoon1,2, Yong-Geon Shin3, Mary Beth Kirkham4

  • 1Kangwon Institute of Inclusive Technology, Kangwon National University, Chuncheon 24341, Korea.

Toxics
|April 21, 2022
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Summary
This summary is machine-generated.

A new simplified method using methyl isobutyl ketone (MIBK)-1,2-dichloroethane (DCE) offers a robust and accurate analysis for anionic surfactants (AS) in various water types. This MIBK-DCE approach overcomes limitations of the traditional chloroform method, providing faster, more reliable results for environmental monitoring.

Keywords:
MIBK-DCE (3:1)analytical methodanionic surfactantchloroforminterferences

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Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry
  • Water Quality Analysis

Background:

  • Anionic surfactants (AS) are prevalent emerging contaminants in water due to extensive use in consumer and industrial products.
  • The conventional chloroform method for AS analysis is hampered by poor extractability, complexity, time consumption, and anionic interferences.

Purpose of the Study:

  • To develop a simplified, robust analytical method for anionic surfactant (AS) determination in various water matrices.
  • To establish an effective washing protocol for the methyl isobutyl ketone (MIBK)-1,2-dichloroethane (DCE) solvent system to eliminate anionic interferences.
  • To validate the new MIBK-DCE method against established quality control and assurance criteria.

Main Methods:

  • Extraction of methylene blue active substances (MBAS) using a MIBK-DCE (3:1) solvent mixture.
  • Implementation of a two-step washing protocol involving a carbonate/bicarbonate buffer (pH 9.2) and a silver sulfate/potassium alum mixture to remove interferences.
  • Validation of the method using quality control parameters including selectivity, accuracy, precision, MDL, LOQ, and sensitivity across diverse water samples (freshwater, wastewater, seawater).

Main Results:

  • The MIBK-DCE method demonstrated superior performance compared to the chloroform method, exhibiting high accuracy (99.0% recovery), precision (0.1% RSD), and sensitivity.
  • The developed washing protocol effectively eliminated inorganic and organic anion interferences, which were problematic in the standard chloroform method.
  • The simplified MIBK-DCE method achieved a method detection limit (MDL) of 0.0001 mg/L and a limit of quantification (LOQ) of 0.0005 mg/L.

Conclusions:

  • The simplified MIBK-DCE method provides a rapid, robust, reproducible, and convenient alternative for the analysis of anionic surfactants in environmental waters.
  • This method is suitable for a wide range of water types, including freshwater, wastewater, and seawater, offering improved analytical performance.
  • The MIBK-DCE method represents a significant advancement over the traditional chloroform method for routine AS monitoring.