초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 01일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Study on the solvent clusters effect on Ionization efficiency of polycyclic aromatic hydrocarbons by Atmospheric pressure photoionization mass spectrometry

2016년 8월 25일 19시 02분 44초
ANAL2.O-28 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 10시 : 21분
분석화학 - Oral Presentation of Young Analytical Chemists Ⅱ
저자 및
이슬기다운, 김성환*
경북대학교 화학과, Korea
Analytical methods have been developed for the analysis of unknown compounds in accordance with the remarkable development of modern science and the specialization of analytical instruments. However, there still remain areas that cannot be clearly defined yet. Among them, there is a remaining challenge to identify and characterize the processes of ionization in mass spectrometry. One of the important process for the ionization is interaction between solvent cluster and analyte. In this study, the effect of solvent clusters exerted on the atmospheric pressure photo ionization of polycyclic aromatic hydrocarbons (PAHs) compounds were investigated. Eight molecules having similar molecular weight but different chemical structures were dissolved into various solvent compositions and ionization efficiencies were investigated. The obtained results were compared with thermodynamic parameters derived from theoretically calculated solvent clusters. Preliminary results show that methanol clusters lower sensitivity of analysis by reacting with toluene radical ions. In case of water cluster, the reactivity with toluene radical ions was lower and hence does not affect the ionization efficiency.