Deep eutectic solvent based advance microextraction method for determination of aluminum in water and food samples:...

Area of Science:

• Analytical Chemistry
• Environmental Chemistry

Background:

• Aluminum (Al³⁺) is a prevalent element in environmental and food matrices.
• Accurate quantification of low Al³⁺ concentrations requires effective preconcentration techniques.

Purpose of the Study:

• To develop a novel deep eutectic solvent-based ultrasound-assisted liquid phase microextraction (DES-UALPME) method.
• To enable sensitive preconcentration and quantification of Al³⁺ in water and food samples.

Main Methods:

• Utilized deep eutectic solvents (DESs) as a green solvent for liquid phase microextraction.
• Employed ultrasound-assisted extraction for enhanced efficiency.
• Analyzed preconcentrated samples using electrothermal atomic absorption spectrometry (ETAAS).

Main Results:

• Achieved a high pre-enrichment factor of 50.
• Obtained a low limit of detection of 0.032 μgL^-1.
• Demonstrated efficient extraction of Al³⁺-8-hydroxyquinoline chelates with high recovery rates.

Conclusions:

• The developed DES-UALPME method is effective for preconcentrating Al³⁺.
• The method shows excellent agreement with certified reference material (SLRS-5 river water).
• Successfully applied to diverse water and food samples with 3.3% RSD.