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September 23, 2025Environmental Science & Technology

Prolonged Natural Attenuation of N-Nitrosamines in Groundwater–Soil Systems: Insights into Kinetics, Pathways, and Degradation Mechanisms from Microcosm Experiments

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Authors

YCYingjie ChenJXJingxuan XiaHHHuanfang Huang

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Overview

Microcosm experiments reveal degradation mechanisms for N-nitrosamines in groundwater, indicating critical pathways in remediation efforts.

Key Points

  • The half-lives of N-nitrosamines exceed 150 days under certain groundwater conditions, indicating prolonged natural attenuation.
  • Microbial cometabolism primarily drives the degradation of N-nitrosamines, producing secondary amines and ammonium.
  • Aerobic decay rates for N-nitrosamines are roughly double those under anaerobic conditions, influencing remediation strategies.
  • Variations in microbial community composition highlight the importance of specific taxa in the degradation of N-nitrosamines.

Cite This Study

Chen et al. (2025) studied this question.

synapsesocial.com/papers/68d4757f31b076d99fa6d01chttps://doi.org/10.1021/acs.est.5c06810
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