Trace analysis of acetaldehyde as fluorogenic derivative by high performance liquid chromatography

Area of Science:

• Analytical Chemistry
• Biochemistry
• Chromatography

Background:

• Acetaldehyde is a volatile aldehyde with significant biological and industrial relevance.
• Accurate quantification of acetaldehyde is crucial for various applications, including clinical diagnostics and environmental monitoring.
• Existing methods for acetaldehyde determination may lack sensitivity or require complex sample preparation.

Purpose of the Study:

• To develop and validate a highly sensitive method for acetaldehyde determination.
• To utilize high-performance liquid chromatography (HPLC) coupled with fluorescence detection for enhanced sensitivity.
• To establish a reliable analytical technique for acetaldehyde quantification in aqueous samples and biological matrices.

Main Methods:

• Acetaldehyde was derivatized to form a fluorogenic decahydroacridin-1,8-dione derivative.
• The derivatization reaction involved acetaldehyde, 1,3-cyclohexanedione, and ammonium acetate in an acidic aqueous system.
• Separation was achieved using a reversed-phase C-18 column, and detection was performed with a fluorescence detector (excitation: 375 nm, emission: 512 nm).

Main Results:

• The method demonstrated high sensitivity with a linear quantitation range of 20 to 800 pmol for acetaldehyde in 0.5 mL aqueous samples.
• Optimized reaction conditions and chromatographic parameters ensured efficient derivatization and separation.
• The method was successfully applied to the analysis of acetaldehyde in plasma samples, demonstrating its practical utility.

Conclusions:

• A sensitive and reliable HPLC-fluorescence method for acetaldehyde determination has been established.
• The developed method offers a valuable tool for the quantification of acetaldehyde in complex matrices like plasma.
• This technique provides a sensitive approach for acetaldehyde analysis in research and diagnostic settings.