Abundance and Fluorescent Components of Dissolved Organic Matter Affected by Land Use in a Drinking Water Source

被引：1
作者：
Gao J. [1 ]
Pu X. [1 ]
Zhang Y.-H. [1 ]
Cheng H.-G. [2 ]
Zhang R.-N. [1 ]
Liu X.-L. [1 ]
Dong X. [1 ]
Xu X.-Y. [1 ]
机构：
[1] College of Resource Environment and Tourism, Capital Normal University, Beijing
[2] College of Water Sciences, Beijing Normal University, Beijing
来源：
Huanjing Kexue/Environmental Science | 2022年 / 43卷 / 04期
关键词：
Chaobai River; Dissolved organic matter (DOM); Excitation emission matrix spectroscopy (EEMs); Fluorescence index; Parallel factor analysis (PARAFAC);
D O I：
10.13227/j.hjkx.202105013
中图分类号：
学科分类号：
摘要：
Regional concentrations, fluorescent components, and sources of dissolved organic matter (DOM) in a drinking water source in Chaobai River across seasons were investigated here using fluorescence excitation-emission matrices, parallel factor analysis, and fluorescence indexes. Five fluorescent-DOM components were identified, including two microbial humic-like components and one autochthonous tyrosine-like, one reduced quinone-like, and one terrestrial humic-like component. DOM was mainly derived from microorganisms. The farmland-dominated region showed the highest DOM concentration and significantly lower maximum fluorescence intensities (Fmax) of almost all fluorescent components than those in the forest-dominated region. The region dominated by urban lands exhibited obviously lower DOM concentrations than those in the farmland-dominated region and lower Fmax values of fluorescent components than those in the forest-dominated region. No interaction was found between land use and season when considering their effects on DOM. Season had a significant influence on the humification degree of DOM. This study shows that agricultural land use had a greater impact on DOM than that of forests and urban areas, and the increased riverine DOM resulting from farmland was mainly non-fluorescent parts. © 2022, Science Press. All right reserved.
引用
收藏
页码：1950 / 1957
页数：7
相关论文
共 38 条
  • [1] An D, Gu B, Sun S N, Et al., Relationship between THMs/NDMA formation potential and molecular weight of organic compounds for source and treated water in Shanghai, China, Science of the Total Environment, 605-606, pp. 1-8, (2017)
  • [2] Liu B, Yu X, Yu G Z, Et al., Chlorination characteristic and disinfection by-product formation potential of dissolved organic nitrogen compounds in municipal wastewater, Environmental Science, 34, 8, pp. 3156-3163, (2013)
  • [3] Lu J F, Zhang T, Ma J, Et al., Evaluation of disinfection by-products formation during chlorination and chloramination of dissolved natural organic matter fractions isolated from a filtered river water, Journal of Hazardous Materials, 162, 1, pp. 140-145, (2009)
  • [4] Hosen J D, Armstrong A W, Palmer M A., Dissolved organic matter variations in coastal plain wetland watersheds: the integrated role of hydrological connectivity, land use, and seasonality, Hydrological Processes, 32, 11, pp. 1664-1681, (2018)
  • [5] Li Y, Wei H J, Wang K, Et al., Analysis of the relationship between dissolved organic matter (DOM) and watershed land-use based on three-dimensional fluorescence-parallel factor (EEM-PARAFAC) analysis, Environmental Science, 40, 4, pp. 1751-1759, (2019)
  • [6] Cronan C S, Piampiano J T, Patterson H H., Influence of land use and hydrology on exports of carbon and nitrogen in a Maine River Basin, Journal of Environmental Quality, 28, 3, pp. 953-961, (1999)
  • [7] Wilson H F, Xenopoulos M A., Ecosystem and seasonal control of stream dissolved organic carbon along a gradient of land Use, Ecosystems, 11, 4, pp. 555-568, (2008)
  • [8] Vidon P, Wagner L E, Soyeux E., Changes in the character of DOC in streams during storms in two Midwestern watersheds with contrasting land uses, Biogeochemistry, 88, 3, pp. 257-270, (2008)
  • [9] Kalbitz K, Solinger S, Park J H, Et al., Controls on the dynamics of dissolved organic matter in soils: a review, Soil Science, 165, 4, pp. 277-304, (2000)
  • [10] Spencer R G M, Aiken G R, Wickland K P, Et al., Seasonal and spatial variability in dissolved organic matter quantity and composition from the Yukon River basin, Alaska, Global Biogeochemical Cycles, 22, 4, (2008)
1234