Development of atmospheric pressure chemical ionization mass spectrometry using accurate corona discharges and its application to field measurements

化学电离（CI）质谱法可以在不分解的情况下对挥发性有机化合物进行高灵敏度和实时分析，广泛应用于现场测量。当前CI技术的一个主题是不寻找酸性有机化合物电离的反应物离子。在这项研究中，我已经建立了一个离子源，导致反应物离子的规则形成，适用于具有硝基和氨基的酸性有机化合物的电离，使用精确的电晕放电系统。所得结果将有助于柴油车尾气中未知硝基有机化合物的识别和定量分析。

Chemical ionization(CI) mass spectrometry allows high-sensitive and real-time analysis of volatile organic compounds without decomposition, which are widely used under field measurements. A subject of current CI techniques is not to find reactant ions for ionization of acidic(in) organic compounds. In this study, I have established an ion source leading to the regular formation of reactant ions suitable for the ionization of acidic organic compounds having nitro and amino groups, using an accurate corona discharge system. The results obtained would contribute toward the identification and quantitative analysis of unknown nitro organic compounds in diesel vehicle exhausts.