Extraction and Measurement of 1,4-Dioxane in Detergents Using Headspace Microextraction Followed by Gas
Azizollah Nezhadali1, Masoumeh Darbanian1,2, Mohammad Reza Mohammadian2
1Department of Chemistry, Payame Noor University, P.O. Box 19395-4697, Tehran 19569, Iran.
Journal of AOAC International
|March 20, 2025
Summary
A new method accurately detects 1,4-dioxane in detergents using graphene oxide nanocomposites and headspace microextraction (HS-ME). This ensures consumer safety by quantifying this hazardous by-product with high sensitivity and reproducibility.
Area of Science:
- Analytical Chemistry
- Materials Science
- Environmental Science
Background:
- 1,4-dioxane is a hazardous by-product in sanitary detergents.
- Accurate detection is crucial for consumer safety.
Purpose of the Study:
- Develop and optimize a method for 1,4-dioxane detection in detergents.
- Utilize graphene oxide nanocomposites for enhanced extraction.
Main Methods:
- Electropolymerization of graphene oxide on stainless steel mesh.
- Headspace microextraction (HS-ME) for sample preparation.
- Gas chromatography-flame ionization detection (GC-FID) for analysis.
- Plackett-Burman and Central Composite Designs for optimization.
Main Results:
- Linear range: 0.5–200 μg/mL (R²=0.9989).
- Limits of detection/quantification: 0.15/0.5 μg/mL.
- High accuracy (91.6–104% recovery) and reproducibility (3.2–6.8% RSD).
Conclusions:
- The developed HS-ME-GC-FID method is sensitive and accurate for 1,4-dioxane.
- Electropolymerized graphene oxide nanocomposites are effective absorbents.
- Optimization using statistical designs improved extraction efficiency.
