you can extract all the solvent extract to find the polar and non polar compounds

Regards

GC- MS itself does not explain any thing about structure itself you need to study if known compound than use it as reference otherwise use pure compound

Hello

In the GC-MS analysis, using suitable solvent is dependent on nature of compounds that you are exploring them. However, you must be regard that aqueous extract is never suggested for GC-MS analysis.

In order to analysis some feature of compounds that obtained from GC-MS output, I suggest using the NIST library.