I have a problem with succinic acid assay. HPLC and enzymatic kits are two methods for this purpose, I'm looking for an inexpensive method. help me plz?
Acid-base titration, titrate with sodium hydroxide phenolphthalein as indicator. And Succinic acid Assay HPLC method Official monograph United State Pharmacopeia.
Hi Seyed, unfortunately succinic acid is a molecule with no specific properties, so the range of specific quantification methods is limited. However, there are a few possibilities. Besides the already mentioned acid-base titration, gravimetric determination might be an option. The alkaline earth isuccinates are all poorly soluble.
One article reports a photometric method in which succinic acid is converted by exposure to sulfuric acid to 5,8-dioxy-2,3-dihydro-1,4-naphthaquinone, which has an absorption maximum at 520 nm. You can find the article here:
https://pharmaciyajournal.ru/en/node/38078
Article Photometric determination of succinic acid in liquid preparations