In the research, the use of thin films of 18-Crown-6 ether.By causing the selected type Crown Ether used to grip with 2, 4, 6-TRINITROTOLUENE (TNT), because the 2, 4, 6-TRINITROTOLUENE (TNT) is a substance that is qualified to make the electrons by its structure resembles a nitroaromatic hydrocarbons which are are not highly saturated in the Middle so it makes it look like a + ion and 18-Crown-6 ether. While catching up with good metal ions, thereby catching up with TNT and use the substance as Polymethyl methacrylate polymer sample. Help in creating a film to adhere to the surface of the QCM.By the structure of the two types of compounds are characterized by 2.
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