オーラルセッション
- 第2日 5月20日（木） 11:40～12:00 F会場（Zoom）
-
2F-O10-1140 PDF
高分解能衝突誘起解離質量分析法を用いたテルペン二量体の精密同定
Interest in mass spectrometry of highly oxidized dimers from monoterpene oxidation has increased in the atmospheric chemistry field. Here, we apply high-resolution collision-induced dissociation mass spectrometry (HR-CID-MS) with an atmospheric pressure ionization source to investigate in detail how α-pinene-derived dimers are detected and identified by MS. The resulting HR-CID spectra and specific fragmentation patterns suggest that a large fraction of dimer ions detected in full-scan mass spectra can be hydrogen-bonded artifact clusters and the residual small fraction includes covalently bonded actual dimers. We also show how individual fractions of the artifact clusters and actual dimers are calculated using the HR-CID spectra.