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Citation: ZENG Zhen, YU Jia-Jun, LIU Ping, HUANG Fu-Gui, CHEN Ying, HUANG Zheng-Xu, GAO Wei, LI Mei, ZHOU Zhen, LI Lei. Investigation of Characters of Bioaerosols on Single Particle Aerosol Mass Spectrometer[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(9): 1344-1351. doi: 10.19756/j.issn.0253-3820.191202 shu

Investigation of Characters of Bioaerosols on Single Particle Aerosol Mass Spectrometer

ZENG Zhen ^1, ,
YU Jia-Jun ¹ ,
LIU Ping ² ,
HUANG Fu-Gui ² ,
CHEN Ying ¹ ,
HUANG Zheng-Xu ¹ ,
GAO Wei ¹ ,
LI Mei ¹ ,
ZHOU Zhen ¹ ,
LI Lei ¹

1.
Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;
2.
Guangzhou HeXin Instrument Co., LTD, Guangzhou 510530, China

Received Date: 12 April 2019
Revised Date: 11 July 2019

Fund Project: This work was supported by the National Key Research and Development Program of China (No. 2017YFC0209506).

Active bioaerosols suspended in the atmosphere can harm human health through the human respiratory system, so the detection of active bioaerosols is extremely important. In recent years, more and more research has attempted to apply single particle aerosol mass spectrometry (SPAMS) to monitor atmospheric bioaerosols. In this work, 13 known strains were analyzed by SPAMS and it was found that the single cell spectra of different active bioaerosols had high consistency, so it was difficult to identify the strains. However, the common peaks of active bioaerosols were quite different from the characteristic peaks of other fine particles in the atmosphere. For example, there were m/z 30, 70, 72, 74, 86, 88, 110, 120 and other amino acid fragments, m/z -26, -42, -79, -97, -159 and other cyanide and phosphate ion peaks in living bacterial aerosols. In the detection of external atmospheric aerosols, it was found that the above-mentioned negative ion peaks were relatively stable, which could be used as a characteristic peak for identifying bacterial aerosols in practical applications to achieve the purpose of identifying active bacterial aerosols online.
- Single particle aerosol mass spectrometer,
- Bioaerosols,
- Online identification
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