Citation: QIAN Xiang, ZHANG Qian, LU Xin-Qiong, YU Quan, NI Kai, ZHANG Chao, WANG Xiao-Hao. Development of Electrospray/Photoionization Miniature Ion Trap Mass Spectrometer[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(7): 1096-1101. doi: 10.11895/j.issn.0253-3820.170136 shu

Development of Electrospray/Photoionization Miniature Ion Trap Mass Spectrometer

QIAN Xiang ^1, ,
ZHANG Qian ¹ ,
LU Xin-Qiong ^1,2 ,
YU Quan ¹ ,
NI Kai ¹ ,
ZHANG Chao ³ ,
WANG Xiao-Hao ^1,2

1.
Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China;
2.
State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
3.
Guangdong Provincial Key Laboratory of Optomechatronics, Shenzhen 518057, China

Received Date: 7 March 2017
Revised Date: 28 April 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21305075)

An electrospray/ultraviolet lamp dual-source ion trap mass spectrometer was developed for the rapid detection of gas and liquid samples. The instrument used the discontinuous atmospheric pressure sampling technique that both the electrospray ions and gaseous analytes were sampled and transferred using a pinch valve device. The two ionization sources were generally suitable for different kinds of analytes and provided complementary applications. Electrospray was used for the ionization of polar compounds in solution, while the UV ionization source was mainly applied for the analysis of gaseous organic compounds. A variety of samples such as anisole, toluene, 2,4-dimethylaniline, arginine, reserpine and aspartame were employed to test the performance in different working mode of the instrument. The results showed that the two sources were feasible for ionization of different types of samples, and different types of molecular ions could be generated when 2,4-dimethylaniline was analyzed. The two ionization sources could be used alternately or simultaneously without interference, and the working mode was also switched to fit the application requirements. The dual-source configuration was an effective way to extend the applications for miniature mass spectrometers. It did not significantly increase the size of the instrument, but provided more versatile analysis to meet the need for the measurement of different types of samples.
- Electrospray ionization,
- Photoionization,
- Rectilinear ion trap,
- Dual source,
- Miniature mass spectrometry
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