Curcumin-Melamine For Solid-Phase Microextraction of Volatile Organic Compounds from Aqueous Samples.

Area of Science:

• Analytical Chemistry
• Materials Science

Background:

• Developing sensitive and stable extraction materials is crucial for environmental monitoring.
• Hybrid materials offer unique properties for analytical applications.

Purpose of the Study:

• To prepare and characterize a novel hybrid coating of curcumin and melamine for solid-phase microextraction.
• To evaluate the performance of the developed fiber for the extraction of ethylbenzene, toluene, and xylenes (ETX).

Main Methods:

• Electrochemical preparation of a curcumin-melamine hybrid coating on a fiber.
• Characterization using FT-IR, scanning electron microscopy, and X-ray fluorescence spectroscopy.
• Optimization of headspace solid-phase microextraction parameters (time, temperature, salt).

Main Results:

• The fiber exhibited excellent thermal stability up to 280°C.
• Optimized method achieved low detection limits (0.15-0.21 μg L⁻¹) and wide linear ranges (0.5-1,000 μg L⁻¹).
• Good reproducibility was demonstrated with intra-day (10.2-13.7%) and inter-day (13.0-15.6%) relative standard deviations.

Conclusions:

• The curcumin-melamine hybrid fiber is a promising material for the efficient extraction of ETX.
• The developed method is suitable for the trace analysis of ETX in real-world water samples.