Recently, Prof. Pingqing Fu's group at the School of Earth System Science, Tianjin University, has investigated the molecular chemodiversity and sources of rainwater DOM at six locations in the Yangtze River Basin using excitation-emission matrix (EEM) fluorescence and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS).
The related results are titled "Source and Formation Process Impact the Chemodiversity of Rainwater Dissolved Organic Matter along the Yangtze River Basin in Summer", published in Water Research, (IF= 11.236). The first author of this paper is Shuang Chen, a doctoral candidate in 2018, and the corresponding author is Professor Pingqing Fu. The co-authors are from Peking University, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, and Korea Basic Science Institute.

Results show that the derivatives of biogenic volatile organic compounds were widely distributed and contributed to rainwater DOM along the Yangtze River Basin. Natural and anthropogenic emissions and climatic conditions shaped the chemodiversity of rainwater DOM. Further, more than 70% of rainwater DOM molecules are associated with 36 typical transformation mechanisms during rainwater-scavenging processes, e.g., oxidation reactions, dealkylation and decarboxylation. The findings help to better understand the biogeochemical cycles of organic matter in a large-scale watershed under the influence of human activities. This work was supported by the National Natural Science Foundation of China (Grant Nos.41625014, 42130513).

Link of the article: Source and Formation Process Impact the Chemodiversity of Rainwater Dissolved Organic Matter along the Yangtze River Basin in Summer, Water Research, 2021, 118024, ISSN 0043-1354,https://doi.org/10.1016/j.watres.2021.118024

By School of Earth System Science
Editor: Sun Xiaofang