| 초록 |
Human body odor consists of various kinds of odor components. Among them, 2-nonenal is occured by oxidation of skin secretion. In order to measure 2-nonenal, GC-MS can be used, but it is difficult because of very expensive and long measurement time. On the other hand, QCM sensor can easily be used for sensing human body odor because of cheap and short response time. However, in order to use QCM sensor, the host compound should select. So, β-cyclodextrin was selected as host compound in order to sensing 2-nonenal. To deposit βCD on QCM, we introduced thiol (-SH) group in the βCD, and then it was modified on QCM electrode in DMSO/H2O mixed solution of βCD-SH. Sucssessful synthesis of βCD-SH was chracterized via 1H-NMR, FT-IR, and MS. Preparation of the QCM sensor based on βCD was characterized via XPS and contact angle. Also, reliability of measured data was compared with GC-MS data. Finally, we measured frequency shift according to concentration of 2-nonenal via QCM sensor. |
