Environmental Science and Pollution Research

, Volume 25, Issue 14, pp 14197–14205 | Cite as

Application of UV-visible absorption spectroscopy combined with two-dimensional correlation for insight into DOM fractions from native halophyte soils in a larger estuarine delta

  • Huaibin Wei
  • Huibin YuEmail author
  • Hongwei Pan
  • Hongjie GaoEmail author
Research Article


UV-visible absorption spectroscopy combined with principal component analysis (PCA) and two-dimensional correlation (2D correlation) is used to trace components of dissolved organic matter (DOM) extracted from soils in a larger estuarine delta and to investigate spatial variations of DOM fractions. Soil samples of different depths were collected from native halophyte soils along a saline gradient, i.e., Suaeda salsa Comm. (SSC), Chenopodium album Comm. (CAC), Phragmites australis Comm. (PAC), and Artemisia selengensis Comm. (ASC). Molecular weights of DOM within the SSC soil profile were the lowest, followed by the CAC, PAC, and ASC soil profiles. Humification degree of DOM within the ASC soil profile was the highest, followed by the PAC, SSC, and CAC soil profiles. DOM within the soil profiles mainly contained phenolic, carboxylic, microbial products, and aromatic and alkyl groups through the PCA, which presented the significant differentiation among the four native halophyte soil profiles. The 2D UV correlation spectra of DOM within the SSC soil profile indicated that the variations of the phenolic groups were the largest, followed by the carboxylic groups, microbial products, and humified organic materials according to the band changing order of 285 → 365 → 425 → 520 nm. The 2D UV correlation spectra of DOM within the CAC soil profiles determined that the decreasing order of the variations was phenolic groups > carboxylic groups > microbial products according the band changing order of 285 → 365 → 425 nm. The 2D UV correlation spectra of DOM within the PAC soil profile proved that the variations of the phenolic groups were larger than those of the carboxylic groups according to the band changing order of 285 → 365 nm. The 2D UV correlation spectra of DOM within the ASC soil profile demonstrated that the variations of the phenolic groups were larger than those of the other DOM fractions according to the broad cross-peak at 285/365–700 nm.


UV-visible absorption Principal component analysis Two-dimensional correlation DOM Native halophyte soil 



This work was financially supported by China Postdoctoral Science Foundation (Fund number 2013T60148), the National Natural Science Foundation of China (Fund number 51379079), and Scientific Research Foundation of the Higher Education Institutions of Henan Province (Fund number 16A570001).


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Copyright information

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

Authors and Affiliations

  1. 1.Xi’an University of TechnologyXi’anPeople’s Republic of China
  2. 2.North China University of Water Resources and Electric PowerZhengzhouPeople’s Republic of China
  3. 3.State Key Laboratory of Environmental Criteria and Risk AssessmentChinese Research Academy of Environmental ScienceBeijingPeople’s Republic of China

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