Microextraction in urine samples for gas chromatography: a review

Area of Science:

• Analytical Chemistry
• Environmental Science
• Biomedical Science

Background:

• Biological samples present complex matrices, driving the need for advanced analytical techniques.
• Miniaturized sample preparation is crucial for efficient and sensitive analysis of trace analytes.

Purpose of the Study:

• To provide a comprehensive review of microextraction methods for urine sample analysis.
• To classify and detail liquid-, solid-, and membrane-based microextraction techniques.
• To compare existing microextraction methods and predict future research directions.

Main Methods:

• Literature survey of microextraction techniques coupled with gas chromatography (GC).
• Classification of methods into liquid-, solid-, and membrane-based categories.
• Analysis of extraction principles, modes, and recent advancements.

Main Results:

• Detailed overview of various microextraction techniques applied to urine samples.
• Comparison of the strengths and weaknesses of different microextraction approaches.
• Identification of current trends and future perspectives in the field.

Conclusions:

• Microextraction techniques offer efficient preconcentration and determination of analytes in complex urine matrices.
• The review highlights the evolution and potential of miniaturized sample preparation for enhanced analytical performance.
• Future research should focus on further miniaturization and novel extraction strategies.