Novel MIPs-Parabens based SPE Stationary Phases Characterization and Application

Area of Science:

• Analytical Chemistry
• Polymer Science
• Environmental Science

Background:

• Parabens are widely used preservatives with potential endocrine-disrupting properties.
• Accurate quantification of parabens in complex matrices is challenging due to low concentrations and interfering substances.
• Development of selective extraction materials is crucial for reliable paraben analysis.

Purpose of the Study:

• To synthesize and characterize novel parabens imprinted polymers for solid-phase extraction (SPE).
• To evaluate the performance of these imprinted polymers for the selective extraction of seven parabens.
• To assess the applicability of the developed SPE method for paraben analysis in real urine samples.

Main Methods:

• Sol-gel molecular imprinting technique was employed to create the imprinted polymers.
• High-Performance Liquid Chromatography (HPLC) with a Photodiode Array (PDA) detector was used for paraben separation and detection.
• Characterization of SPE sorbents included extraction capability, breakthrough volume, retention volume, and theoretical plates.
• The method was validated using a real urine sample matrix.

Main Results:

• A novel paraben imprinted SPE sorbent was successfully synthesized and characterized.
• The developed SPE method demonstrated high selectivity and efficiency for extracting all seven parabens.
• All seven parabens were resolved within a 25-minute HPLC-PDA run.
• The method proved feasible for analyzing parabens in a complex matrix like urine.

Conclusions:

• The novel parabens imprinted SPE sorbents offer enhanced extraction efficiency for paraben analysis.
• These molecularly imprinted polymers (MIPs) represent a promising tool for trace quantification of parabens.
• The developed method has potential for improving overall analytical performance in complex samples.