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We are conducting a fenton experiment (H2O2/Fe (II) system) to study the degradation of 2-chlorophenol. We would like to analyze the reaction mixture on GCMS to see what are the oxidation products.
Before analysis we extract the reaction mixture, which is aqueous, with hexanes (it is a mix of 5 isomers). The extraction is conducted in a screw top glass vial and 9 mL of hexanes is used to extract 22 mL aqueous sample. The glass vial is then placed on a vortex mixer.
The problem is that the moment vortex starts a foam is formed in the hexane layer (extract) and it does not disappear even after 3 days.
Our guess for possible reasons for the formation of foams are:
1-The generation of O2 in the reaction mixture as a result of fenton reaction
2- Using the hexanes instead of n-hexane (which is normally used for liq-liq extraction)
I would really appreciate any insight regarding this issue.
Seyfollah