Dear Bongisiwe Zozo

Headspace gas chromatography (HS-GC) and reverse phase high-performance liquid chromatography (RP-HPLC) are the two main methods used for measurement of acetaldehyde. The HPLC method entails labeling with a derivatization reagent for stabilization and selective determination of acetaldehyde.

For more info, have a look:

1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4609974/

2. https://www.researchgate.net/profile/Cho-Il-Kim/publication/283049295_Validation_and_Determination_of_the_Contents_of_Acetaldehyde_and_Formaldehyde_in_Foods/inline/jsViewer/56df7a2508aec4b3333b7621?inViewer=1&pdfJsDownload=1&origin=publication_detail&previewAsPdf=false

3. https://www.megazyme.com/documents/Validation_Report/K-ACHYD_Validation_Report.pdf

4. https://www.ijpsonline.com/articles/determination-of-acetaldehyde-content-in-candesartan-cilexetil-by-hplc-3523.html

Kind Regards

Qamar Ul Islam