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Direct determination of trace amounts of acetic acid using a novel ambient glow discharge ion source |
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| Authors: | Xiao Hao Wang Kun Liu Fei Tang Jiu Ming He Xue Ye Wei Zeper Abliz |
| Affiliation: | a State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China;b School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;c Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China |
| Abstract: | 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 electrode 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. |
| Keywords: | Ambient ion source Atmospheric glow discharge Mass spectrometry |
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