Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding area
Nitrate (NO3−) pollution in groundwater is a worldwide environmental issue, particularly in developed planting-breeding areas where there is a substantial presence of nitrogen-related sources. Here, we explored the key sources and potential health risks of NO3− in a typical planting-breeding area in...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651325001149 |
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| author | Jianwei Liu Shuo Qiao Shilong Zhao Hui Chen Yong Wu Donghao Li Ping Liu Ling Li |
| author_facet | Jianwei Liu Shuo Qiao Shilong Zhao Hui Chen Yong Wu Donghao Li Ping Liu Ling Li |
| author_sort | Jianwei Liu |
| collection | DOAJ |
| description | Nitrate (NO3−) pollution in groundwater is a worldwide environmental issue, particularly in developed planting-breeding areas where there is a substantial presence of nitrogen-related sources. Here, we explored the key sources and potential health risks of NO3− in a typical planting-breeding area in the North China Plain based on dual stable isotopes and Monte Carlo simulations. The analysis results revealed that the NO3− concentration ranged from 0.02 to 44.6 mg/L, with a mean value of 7.54 mg/L, along with a significant spatial variability. Analysis by combining stable isotopes (δ15N-NO3− and δ18O-NO3−) with the Bayesian isotope mixing model (MixSIAR) revealed that soil N (60.3 %) and manure and sewage (35.9 %) contributed the most NO3− in groundwater, followed by chemical N fertilizer (2.9 %) and atmospheric N deposition (0.8 %). However, the contribution of N fertilizer may be underestimated because it has undergone a long-term applied history and have progressively accumulated in the soil, and then promoted the entry of groundwater under frequent rainfall and irrigation practices. From the probabilistic health risk assessment, a relatively low probability of exceeding the threshold (HI=1) was observed (0.2 % for adults and 2.59 % for children); nevertheless, children still face some nonnegligible risk, particularly for the oral ingestion of drinking water at high-pollution sites. Therefore, we highlight the importance of effective management of manure and sewage from breeding plants and reduction of chemical N fertilizer usage are suggested in developed agricultural areas. |
| format | Article |
| id | doaj-art-44dd1c5b8072498aabe8a834a4491a62 |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-44dd1c5b8072498aabe8a834a4491a622025-02-12T05:30:19ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01290117778Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding areaJianwei Liu0Shuo Qiao1Shilong Zhao2Hui Chen3Yong Wu4Donghao Li5Ping Liu6Ling Li7College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450046, ChinaCollege of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450046, ChinaCollege of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450046, ChinaCollege of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Plateau Oxygen and Living Environment of Tibet Autonomous Region, Tibet University, Lhasa 850000, ChinaCollege of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450046, ChinaCollege of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450046, ChinaCollege of Electronic and Electrical Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450046, China; Corresponding author.Nitrate (NO3−) pollution in groundwater is a worldwide environmental issue, particularly in developed planting-breeding areas where there is a substantial presence of nitrogen-related sources. Here, we explored the key sources and potential health risks of NO3− in a typical planting-breeding area in the North China Plain based on dual stable isotopes and Monte Carlo simulations. The analysis results revealed that the NO3− concentration ranged from 0.02 to 44.6 mg/L, with a mean value of 7.54 mg/L, along with a significant spatial variability. Analysis by combining stable isotopes (δ15N-NO3− and δ18O-NO3−) with the Bayesian isotope mixing model (MixSIAR) revealed that soil N (60.3 %) and manure and sewage (35.9 %) contributed the most NO3− in groundwater, followed by chemical N fertilizer (2.9 %) and atmospheric N deposition (0.8 %). However, the contribution of N fertilizer may be underestimated because it has undergone a long-term applied history and have progressively accumulated in the soil, and then promoted the entry of groundwater under frequent rainfall and irrigation practices. From the probabilistic health risk assessment, a relatively low probability of exceeding the threshold (HI=1) was observed (0.2 % for adults and 2.59 % for children); nevertheless, children still face some nonnegligible risk, particularly for the oral ingestion of drinking water at high-pollution sites. Therefore, we highlight the importance of effective management of manure and sewage from breeding plants and reduction of chemical N fertilizer usage are suggested in developed agricultural areas.http://www.sciencedirect.com/science/article/pii/S0147651325001149Groundwater nitrateNO isotopesMixSIARProbabilistic health riskPlanting–breeding area |
| spellingShingle | Jianwei Liu Shuo Qiao Shilong Zhao Hui Chen Yong Wu Donghao Li Ping Liu Ling Li Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding area Ecotoxicology and Environmental Safety Groundwater nitrate NO isotopes MixSIAR Probabilistic health risk Planting–breeding area |
| title | Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding area |
| title_full | Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding area |
| title_fullStr | Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding area |
| title_full_unstemmed | Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding area |
| title_short | Quantifying the sources and health risks of groundwater nitrate via dual NO isotopes and Monte Carlo simulations in a developed planting-breeding area |
| title_sort | quantifying the sources and health risks of groundwater nitrate via dual no isotopes and monte carlo simulations in a developed planting breeding area |
| topic | Groundwater nitrate NO isotopes MixSIAR Probabilistic health risk Planting–breeding area |
| url | http://www.sciencedirect.com/science/article/pii/S0147651325001149 |
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