I want to know the composition of high volatile compound present in soil. So, which technique will give me the right information of all organic elements present in that high volatile compound? As, in SEM EDX and FTIR, we can't detect it properly. If GCMS is the correct procedure to detect it then what is the proper procedure for solid sample? Please explain in detail. Thank you.
I detect CO, H2, and CH4 using GC, by doing a reaction in a sealed vial and sampling the headspace with a gas-tight syringe with a valve. The GC needs a gas sampling port. You could put the soil in a flask with a septum, and do something similar. SEM/EDX is for materials/surfaces, not small molecules. IR can work if you use a gas cell and do background subtraction with a blank.
If they are concentrated enough and not that volatile, you could wash the solid with deuterated NMR solvent and take an NMR in a sealed NMR tube (like a J-young style), but it will be much less sensitive than GC or GC-MS
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