Direct determination of trace amounts of acetic acid using a novel ambient glow discharge ion source

• 作 者: Xiao Hao Wang Kun Liu Fei Tang
• 机 构: State Key Laboratory of Precision Measurement Technology and Instruments,School of Electronics and I
• 出 处: 中国化学快报（英文版）
• 发表日期: 2004年期
• 关键词: Ambient ion source Atmospheric glow discharge Mass spectrometry
• 基金项目: the National High Technology Research and Development Plan of China;国家自然科学基金

A novel ambient glow discharge ion source with improved line-cylinder electrodes is put forward and designed in this paper.The diameters of inner and outer electrodes are 0.16 and 4 mm respectively.With a special assembly method,a perfect coaxiality of the two electrodes is obtained.From the gas discharge experiment,it can be seen that the discharge can stably work in normal glow discharge mode.The operating currents of the ion source are in an order of milliamperes and can generate a much larger number and wider variety of reagent ions.The MS experiment shows that the ion source has higher detection sensitivity.