Environmental Science and Pollution Research

, Volume 26, Issue 3, pp 2960–2973 | Cite as

Dissolved organic matter in urban forestland soil and its interactions with typical heavy metals: a case of Daxing District, Beijing

  • Chen Zhao
  • Shi-Jie Gao
  • Lei Zhou
  • Xiang Li
  • Xi Chen
  • Chong-Chen WangEmail author
Research Article


As an active substance, dissolved organic matter (DOM) acts a pivotal part in heavy metals (HMs) transportation from urban forestland soil to aquatic ecosystem. In this study, the soil samples from 35 individual subareas were scientifically collected with the aid of geographical information system (GIS) technology. UV-visible (UV-vis) and excitation-emission matrix (EEM)–related parameters suggested that the DOM in urban forestland soil mainly originated from terrestrial and microbial sources. Fluorescence quenching titration associated with parallel factor (PARAFAC) modeling was applied to quantify the complexation ability of four HMs (Cu, Cd, Pb, and Ni) and DOM in urban forestland soil. One fulvic-like (C1), two humic-like (C2 and C3), and one protein-like fluorophores (C4) were identified by EEM-PARAFAC modeling. Considerable differences in fluorescence quenching curves were observed between individual organic constituents and target HMs. Among the four HMs, addition of Cu(II) ions resulted in EEM spectra quenching of each PARAFAC-decomposed organic constituent. However, relatively strong fluorescence quenching phenomena were only detected in humic-like constituents (C2 and C3) with the titration of Pb(II) and Ni(II), which revealed that these types of organic constituent were predominantly responsible for Pb(II) and Ni(II) binding in urban forestland soil–derived DOM. Furthermore, considering the resistant nature of C2 and C3 constituents along with their significant quenching effects for the four target HMs, the concentrations of humic-like constituents in urban forestland soil may be a useful parameter to evaluate the potential risk of HMs immobilization and transformation.


Urban forestland soil Dissolved organic matter Characterization Heavy metal Quenching EEM-PARAFAC 


Funding information

The authors received financial support from Project of Construction of Innovation Teams and Teacher Career Development for Universities and Colleges Under Beijing Municipality (IDHT20170508), Great Wall Scholars Training Program Project of Beijing Municipality Universities (CIT&TCD20180323), Beijing Talent Project (2018A35), the Fundamental Research Funds for Beijing Universities of Civil Engineering and Architecture (X18075/X18076/X18124/X18125/X18276), and the Scientific Research Foundation of Beijing University of Civil Engineering and Architecture (KYJJ2017033/KYJJ2017008).

Supplementary material

11356_2018_3860_MOESM1_ESM.doc (40 kb)
ESM 1 (DOC 39 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Chen Zhao
    • 1
  • Shi-Jie Gao
    • 1
    • 2
  • Lei Zhou
    • 1
  • Xiang Li
    • 1
  • Xi Chen
    • 1
  • Chong-Chen Wang
    • 1
    Email author
  1. 1.Beijing Key Laboratory of Functional Materials for Building Structure and Environment RemediationBeijing University of Civil Engineering and ArchitectureBeijingChina
  2. 2.College of ForestryBeijing Forestry UniversityBeijingChina

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