演題概要

ポスター発表

第3日　5月21日（金）　　P1会場（Zoom）

3P-14　　PDF

大気圧コロナ放電イオン化法における脱ヒドリド分子[M-H]⁺の生成

(横市大院生命ナノ)
^o服部翼紗・ 関本奏子

Atmospheric pressure corona discharge ionization (APCDI) allows us to measure various volatile samples in real time. Proton transfer from H₃O⁺(H₂O)_n is the major ionization pathway of analytes in the positive-ion mode. Here we found that hydride-abstracted ion [M-H]⁺ is dominantly formed in APCDI for some samples (M). It was also found that there are three pathways at least to form [M-H]⁺: (1) abstraction of two hydrogen atoms from protonated molecule [M+H]⁺, (2) formation of molecular ion M^+・ followed by abstraction of one hydrogen atom, and (3) pathways in which ions such as [M+H]⁺ and M^+・ are not involved.