Nitrate with enriched heavy oxygen isotope linked to changes in nitrogen source and transformation as groundwater

Yajun Wang1, Xiaofeng Cao2, Hongwei Yu3

  • 1State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.

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