日本質量分析学会 第67回質量分析総合討論会

Abstract

Oral Sessions

Day 1, May 15(Wed.) 18:40-19:00 Room D (202)

Ambient Ionization Using Argon in Dark Current Discharge

(1AMR, 2Yokohama City Univ.)
oMotoshi Sakakura1, Teruhisa Shiota1, Mitsuo Takayama2, Kanako Sekimoto2

Argon gas was applied to Ambient ionization. Argon has not been widely used in ambient ionization (including Direct Analysis in Real Time; DART) because the lower internal energies of metastable argon (~11.6 eV) give rise to quite low analyte ionization efficiency compared to metastable helium. Here we found that the combination of argon with an atmospheric pressure dark-current discharge results in an ionization efficiency and mechanism comparable to those of helium DART.