As for toluene, it was shown that the cumulative mass discharged from the GCL composite liner was several orders of magnitude greater than that from composite liners having a thicker soil liner.

• 研究发现对于挥发性有机化合物甲苯，土工膜和GCL组成的复合衬里的浸出液总量要比土工膜和较厚粘土衬里组成的复合衬里大好几个量级。