TY  - JOUR
AU  - An, Yanqing
AU  - Xu, Jianzhong
AU  - Feng, Lin
AU  - Zhang, Xinghua
AU  - Liu, Yanmei
AU  - Kang, Shichang
AU  - Jiang, Bin
AU  - Liao, Yuhong
PY  - 2019
DA  - 2019//
TI  - Molecular characterization of organic aerosol in the Himalayas: insight from ultra-high-resolution mass spectrometry
JO  - Atmospheric Chemistry and Physics
VL  - 19
IS  - 2
CY  - State Key Laboratory of Cryospheric Science, Northwest Institute ofEco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000,China;;State Key Laboratory of Organic Geochemistry, Guangzhou Institute ofGeochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;;University of Chinese Academy of Sciences (UCAS), Beijing 100049,China
AB  - An increased trend in aerosol concentration has been observed in theHimalayas in recent years, but the understanding of the chemical compositionand sources of aerosol remains poorly understood. In this study, molecularchemical composition of water-soluble organic matter (WSOM) from two filtersamples collected during two high aerosol loading periods (denoted as P1 andP2) at a high-altitude station (Qomolangma Station, QOMS;4276  m  a.s.l.) in the northern Himalayas was identified usingelectrospray ionization Fourier transform ion cyclotron resonance massspectrometry (ESI-FTICR MS). More than 4000 molecular formulas wereidentified in each filter sample which were classified into two compoundgroups (CHO and CHON) based on their elemental composition, with bothaccounting for nearly equal contributions in number (45 %–55 %).The relative abundance weighted mole ratio of O∕C<sub>w</sub> for P1 and P2was 0.43 and 0.39, respectively, and the weighted double bond equivalents(DBE <sub>w</sub>...
SN  - 1680-7324
ID  - An2019
ER  -