Triazine-based organic polymers@SiO₂ nanospheres for sensitive solid-phase microextraction of polycyclic aromatic...

Area of Science:

• Materials Science
• Analytical Chemistry
• Environmental Science

Background:

• Solid-phase microextraction (SPME) is a widely used technique for sample preparation.
• Developing novel extraction materials with enhanced performance is crucial for trace analysis.
• Polycyclic aromatic hydrocarbons (PAHs) are common environmental pollutants requiring sensitive detection methods.

Purpose of the Study:

• To synthesize and characterize triazine-based organic polymers@SiO2 nanospheres for SPME.
• To develop an in-tube SPME method using these novel materials for PAH analysis.
• To optimize extraction conditions and validate the analytical method for real water samples.

Main Methods:

• Synthesis of triazine-based organic polymers@SiO2 nanospheres.
• Coating stainless steel wires with the synthesized nanospheres for in-tube SPME.
• Coupling the in-tube SPME system with high-performance liquid chromatography (HPLC) for analysis.
• Investigating key parameters influencing extraction efficiency, including pH, extraction time, and eluent composition.

Main Results:

• The developed in-tube SPME method exhibited large linear ranges (0.010-20 µg/L) and low limits of detection (0.003-0.010 µg/L) for PAHs.
• High enrichment factors (533-2954) and good repeatability (RSD < 1.7% intraday, < 5.0% interday) were achieved.
• The method demonstrated successful application in real water samples with relative recoveries ranging from 82.9% to 119.9%.

Conclusions:

• Triazine-based organic polymers@SiO2 nanospheres are effective materials for in-tube SPME.
• The developed online analytical method offers high sensitivity, efficiency, and applicability for trace PAH determination in water.
• This approach provides a promising tool for environmental sample preparation and analysis.