Determination of atmospheric amines at Seoul, South Korea via gas chromatography/tandem mass spectrometry

Na Rae Choi, Ji Yi Lee, Yun Gyong Ahn, Yong Pyo Kim

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Due to their important roles in salt-producing acid-base reactions, new particle formation (NPF), and as precursors in secondary organic aerosol (SOA) producing reactions, the atmospheric concentrations of particulate volatile amines (dimethylamine (DMA), ethylamine, diethylamine (DEA), propylamine, and butylamine) at Seoul were analyzed and evaluated. To quantify the presence of volatile amines in particulate matter with aerodynamic diameters less than or equal to a nominal 2.5 μm (PM2.5), an efficient and rapid analytical method based on in-matrix ethyl chloroformate (ECF) derivatization followed by headspace solid-phase microextraction (HS-SPME) was developed and validated using gas chromatography coupled with tandem mass spectrometry (GC-MS/MS) in the multiple reaction monitoring (MRM) mode. The annual mean concentration of the total 5 target amines was 5.56±2.76 ng/m3 and the seasonal difference was small. The concentrations of particulate amines measured in this study were lower than those observed in Zongludak, Turkey, Nanjing, China, and Jeju, Korea but slightly higher than that reported in Kobe, Japan. The concentrations of the nitrosamines (nitrosodimethylamine (NDMA) and nitrosodiethylamine (NDEA)), and of the nitramines (dimethylnitramine (DMN) and diethylnitramine (DEN)) measured along with those of the target amines were used in a simple linear regression analysis. It indicates the contribution of DMA to the formation of NDMA in all seasons (except the fall) and DEA to the formation of NDEA in the summer, while DMA and DEA did not significantly contribute to the formation of nitramines.

Original languageEnglish
Article number127367
StatePublished - Nov 2020

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea ( NRF-2019M1A2A2103953 ; NRF-2019R1A6A3A13090585 ) and a Korea Basic Science Institute grant ( C070200 ). In addition, one of the authors (N. R. Choi) is grateful for being awarded the Solvay Scholarship.

Publisher Copyright:
© 2020 Elsevier Ltd


  • GC/MS-MS
  • Particulate amines
  • Particulate matter
  • Poly acrylate fiber
  • Seoul


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