Yes,you can do it.In one experiment ,Thermal remediation of the soil contaminated with crude oil using microwave heating enhanced by carbon fiber (CF) was explored. The contaminated soil was treated with 2.45 GHz microwave, and CF was added to improve the conversion of microwave energy into thermal energy to heat the soil. During microwave heating, the oil contaminant was removed from the soil matrix and recovered by a condensation system of ice-salt bath.

The experimental results indicated that CF could efficiently enhance the microwave heating of soil even with relatively low-dose. With 0.1 wt.% CF, the soil could be heated to approximately 700 degrees C within 4 min using 800 W of microwave irradiation. Correspondingly, the contaminated soil could be highly cleaned up in a short time. Investigation of oil recovery showed that, during the remediation process, oil contaminant in the soil could be efficiently recovered without causing significant secondary pollution.

The other answers were very good.  Be sure to capture your off gas generated.  This is both to protect you and your colleagues and provide additional data.  If you capture the off gas, for instance on activated carbon, you can then 'desorb' the captured material for analysis by GC or GC/MS.  This will give you information on your mass balance, any degradation, efficiencies, etc.