β-cyclodextrin-ionic liquid polymer based dynamically coating for simultaneous determination of tetracyclines by...

Area of Science:

• Analytical Chemistry
• Environmental Science
• Green Chemistry

Background:

• Tetracyclines are broad-spectrum antibiotics used in animal husbandry.
• Improper use can lead to tetracycline residues in animal products and waste.
• Ionic liquids are emerging as green solvents with potential applications in separation science.

Purpose of the Study:

• To synthesize a functionalized ionic liquid for simultaneous separation and quantification of tetracyclines.
• To evaluate the efficacy of the synthesized ionic liquid as a background electrolyte modifier in capillary electrophoresis.
• To develop an optimized method for detecting tetracycline residues.

Main Methods:

• Synthesis of mono-6-deoxy-6-(3-methylimidazolium)-β-cyclodextrin tosylate.
• Application of the synthesized ionic liquid in capillary electrophoresis for tetracycline separation.
• Optimization of running buffer conditions (phosphate buffer and ionic liquid concentration, pH).

Main Results:

• Successful simultaneous separation and quantification of tetracyclines were achieved.
• The β-cyclodextrin derived ionic liquid demonstrated good separation efficiency due to electrostatic interactions, hydrogen bonding, and inclusion complex formation.
• Baseline separation was obtained within 25 minutes using a buffer of 10 mmol/L phosphate (pH 7.2) and 20 mmol/L ionic liquid.

Conclusions:

• The synthesized β-cyclodextrin ionic liquid is a highly stable and reproducible background electrolyte modifier for tetracycline separation.
• Designing and synthesizing specific ionic liquids as additives is an effective strategy for separation science.
• This method provides a promising approach for monitoring tetracycline residues.