Rapid analysis of SVOC in aerosols by desorption electrospray ionization mass spectrometry.
Desorption electrospray ionization mass spectrometry (DESI-MS) was applied for the first time to the analysis of semivolatile organic compounds (SVOC) in atmospheric aerosols. We took polycyclic aromatic hydrocarbons (PAHs) as representatives of SVOCs. The DESI-MS conditions were optimized and the limit of detection for PAHs was about 10 pg with 5 s sampling time. PAHs from both laboratory-made biomass burning aerosols and ambient aerosols were selectively and rapidly analyzed without extraction or preconcentration. The observed PAH species and their relative ion intensities are discussed. This work demonstrates that DESI-MS is a promising method for rapid semiquantitative analysis of SVOC in atmospheric aerosols.
Chen
Hong
H
Department of Environmental Science and Engineering, Fudan University, Shanghai, China.
Li
Mei
M
Zhang
Ya-Ping
YP
Yang
Xin
X
Lian
Jin-Jun
JJ
Chen
Jian-Min
JM