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July 8, 2026Carbon ResearchOpen Access

Adsorption and incubation show iron (oxyhydr)oxides control the persistence of bacterial extracellular polymeric substances in soils

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Authors

CQChenchen QuJZJiaxin ZhaoSYShanshan Yang

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Overview

Randomized trial examines how iron oxides control bacterial extracellular substances in soil, suggesting implications for soil health.

Key Points

  • This study aims to understand how iron (oxyhydr)oxides affect the persistence and transformation of extracellular polymeric substances (EPS) in soils.
  • Investigated EPS adsorption and turnover in clay minerals and three soil types.
  • Utilized synchrotron-based X-ray absorption near-edge structure (XANES) for speciation analysis.
  • Applied Fourier-transform infrared (μ-FTIR) spectroscopy to study mineral-EPS associations.
  • Incubation increased carboxylic carbon by 15.9% and reduced aromatics by 30.0% across soils.
  • XANES analysis indicated significant changes in C and S speciation, highlighting microbial activity's role.
  • Enhanced correlation between iron oxides and organic groups observed with an average R2 increase of 90% post-incubation.

Cite This Study

Qu et al. (2026) studied this question.

synapsesocial.com/papers/6a4de7d8d2ea289ef6282ca5https://doi.org/10.1007/s44246-026-00278-0
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