Desorbed gas composition for each cycle was analyzed by GC-TCD and is presented in Table 2. It shows that 87–87.5% C2H4 and 12.5–13% C2H6 can be obtained during the microwave desorption and 85–85.5% C2H4 and 14.5–15% C2H6 can be obtained during the conductive heating. Both methods measured similar desorbed gas compositions.