Deep Eutectic Solvent Micro-Functionalized Graphene Assisted Dispersive Micro Solid-Phase Extraction of Pyrethroid...

Area of Science:

• Analytical Chemistry
• Materials Science
• Environmental Science

Background:

• Pyrethroid insecticides are widely used, necessitating sensitive detection methods.
• Current extraction techniques may lack efficiency or require complex procedures.
• Development of novel adsorbents is crucial for trace analysis.

Purpose of the Study:

• To synthesize and characterize deep eutectic solvent micro-functionalized graphene (DES-G).
• To apply DES-G as an adsorbent in dispersive micro solid-phase extraction (DMSPE).
• To develop a sensitive method for pyrethroid insecticide determination in complex matrices.

Main Methods:

• Synthesis of DES-G via functionalization of graphene.
• Application of DES-G in DMSPE for analyte extraction.
• Quantification using ultra-high performance liquid chromatography with diode-array detection (UHPLC-DAD).
• Characterization using SEM, TEM, and FTIR.

Main Results:

• DES-G was successfully synthesized and characterized.
• The DMSPE method demonstrated high efficiency for pyrethroid extraction.
• Excellent precision (0.43–0.57% RT) and repeatability (0.04–2.41% peak area) were achieved.
• High recoveries (80.9–114.1%) were obtained for pyrethroid residues in beebread, Curcuma wenyujin, and Dendrobium officinale.

Conclusions:

• DES-G is a promising adsorbent for DMSPE.
• The developed method offers a sensitive and reliable approach for pyrethroid analysis.
• This technique is applicable for residue determination in food and herbal products.