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July 26, 2026Environmental Pollutants and BioavailabilityOpen Access

Effects and mechanisms of distinct nitrogen fertilizers on arsenic transformation in a flooded contaminated paddy soil from mining-impacted area

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Authors

RDRuiyue DingMinistry of EducationYXYongliang XiaoMinistry of EducationPCPing ChenGuizhou Academy of Environmental Science and Design

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Implication

Randomized trial examines the impact of different nitrogen fertilizers on arsenic transformation in contaminated paddies, suggesting optimal treatment options.

Key Points

  • This research aims to clarify how various nitrogen fertilizers influence arsenic transformation in contaminated paddy soil.
  • Applied ammonium fertilizer, nitrate fertilizer, and ammonium-nitrate fertilizer to arsenic-contaminated paddies.
  • Measured changes in available arsenic levels and transformations (As(V) to As(III)).
  • Assessed effects on soil pH, redox potential, and nitrate levels.
  • Ammonium fertilizer decreased available arsenic by 33.5% and available As(III) from 8.5% to 5.9%.
  • Nitrate fertilizer lowered available As(III) to 3.2% but did not significantly change total available arsenic.
  • Ammonium-nitrate fertilizer decreased available arsenic by 20.7% and reduced As(III) to 3.3%, showing a synergistic effect.

Cite This Study

Ding et al. (2026) studied this question.

synapsesocial.com/papers/6a65a9f3d3aea3239cd794b9https://doi.org/10.1080/26395940.2026.2698193
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