Absorption and fluorescence characteristics of dissolved organic matter (DOM) in rainwater and sources analysis in summer and winter season

Sammanfattning

This study aimed at evaluating the variability of the optical properties including UV-Vis and fluorescence characteristics of dissolved organic matter (DOM) from rainwater in summer and winter seasons. UV-Vis and fluorescence spectroscopy, together with Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model and fire events map, were conducted to characterize DOM and investigate its sources and contributions. The results showed that as compared with aquatic and soil DOM, rainwater DOM showed similar spectral characteristics, suggesting DOM in precipitation was also an important contributor to DOM pool in terrestrial and aquatic systems. The concentrations of DOC in rainwater were 0.88-12.80 mg·L-1, and the CDOM concentrations were 3.17-21.11 mg·L-1. Differences of DOM samples between summer and winter were significant (P

Nyckelord

Backward trajectory model; Dissolved organic matter; Fluorescence spectra; Natural organic matter; Rainwater; UV-Vis absorption spectra

Publicerad i

Huan Jing Ke Xue
2015, volym: 36, sidor: 888-897
Utgivare: Science Press

SLU författare

• Jiang, Tao

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    
  • Southwest University

UKÄ forskningsämne

Meteorologi och atmosfärsvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.13227/j.hjkx.2015.03.018

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/132070