演題概要

ポスター発表

第3日　5月19日（金）　　P会場（多目的ホール）

3P-56　　PDF

Arガスと暗流放電を利用したリアルタイム直接イオン化法の開発

(¹エーエムアール・ ²横市大院生命ナノ・ ³米国立海洋大気庁)
^o坂倉幹始^1,2・ 塩田晃久¹・ 川向孝知¹・ 比毛浩¹・ 関本奏子^2,3・ 高山光男²

Direct Analysis in Real Time (DART) is one of the most famous ion source for ambient ionization without any sample preparation. DART ionization is based on metastable heated helium gaseous atoms with penning ionization causing analyte (de)protonation ions. Metastable Helium has important role in ambient ionization nevertheless their small molecule weight leads to load the mass spectrometers turbomolecular pumps and high vacuum system. In this poster, it is shown DART using Argon system. Argon did not yield any ion in use of conventional DART however argon is heavier than Helium and less load to vacuum system. When added another needle electrode to conventional DART, Argon performs penning ionization causing analyte (de)protonation ions like Helium.