Magnetic porous reduced graphene oxide-based dispersive solid phase extraction for triclosan quantification in water

Area of Science:

• Environmental Chemistry
• Analytical Chemistry
• Materials Science

Background:

• Triclosan (TCS) is a widespread environmental contaminant with endocrine-disrupting effects on aquatic life.
• Solid-phase extraction (SPE) is crucial for analyzing trace contaminants in water.
• Developing novel adsorbents enhances SPE efficiency and application scope.

Purpose of the Study:

• To prepare magnetic porous reduced graphene oxide (MPrGO) for environmental analysis.
• To develop and optimize a dispersive magnetic solid-phase extraction (d-MSPE) method for triclosan (TCS) detection.
• To assess the efficiency and applicability of MPrGO-based d-MSPE for TCS quantification in various water matrices.

Main Methods:

• Synthesis of magnetic porous reduced graphene oxide (MPrGO).
• Optimization of dispersive magnetic solid-phase extraction (d-MSPE) parameters: adsorbent dosage (5 mg MPrGO), extraction time (20 s), and elution solvent (4.5 mL methanol-5% ammonia).
• Analysis of triclosan (TCS) using gas chromatography (GC).

Main Results:

• High recovery rates for TCS: 110.3%-122.0% in surface water and 94.6%-96.2% in tap water.
• Low relative standard deviations (RSDs) of less than 5.0% indicate method precision.
• Successful quantification of TCS in reclaimed water samples, demonstrating practical applicability.

Conclusions:

• The MPrGO-based d-MSPE method is highly effective for extracting and quantifying TCS from environmental water.
• The developed analytical method is efficient, simple, cost-effective, and recyclable.
• This approach offers a promising tool for monitoring trace levels of TCS in diverse water samples.