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Improving the management of nitrate pollution in water by the use of isotope monitoring: the δ15N, δ18O and δ11B triptich

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Abstract
In spite of increasing efforts to reduce nitrogen inputs into ground water from intensive agriculture, nitrate (NO3) remains one of the major pollutants of drinking-water resources worldwide, with NO3 levels approaching the defined limit of 50mgl1 in an increasing number of water bodies. Determining the source(s) of contamination in water is an important first step for improving its quality by emission control. The Life ISONITRATE project aimed at showing the benefit of a multi-isotope approach (15N and 18O of NO3, and 11B), in addition to conventional hydrogeological analysis, to track the origin of NO3 contamination in water. Based on land use and local knowledge, four distinct cases were studied: (1) natural soil NO3, (2) natural denitrification, (3) single source of NO3 pollution and (4) multiple sources of NO3 pollution. Our results show the added value of combining isotope information, compared to knowledge based on local authorities' experience, land use and the classical' chemical approach, by efficiently identifying the number and type of NO3 source(s) for each watershed studied.
Keywords
AQUIFER, IDENTIFICATION, OXYGEN, GROUNDWATER, DENITRIFICATION, NITROGEN, BORON ISOTOPES, water pollution, oxygen, nitrogen, nitrate, natural denitrification, isotope ecology, boron, isotope biogeochemistry, FRACTIONATION, COLLECTION, FRANCE

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Chicago
Widory, David, Emmanuelle Petelet-Giraud, Agnes Bregnot, Jan Bronders, Kristof Tirez, and Pascal Boeckx. 2013. “Improving the Management of Nitrate Pollution in Water by the Use of Isotope Monitoring: The δ15N, δ18O and δ11B Triptich.” Isotopes in Environmental and Health Studies 49 (1): 29–47.
APA
Widory, D., Petelet-Giraud, E., Bregnot, A., Bronders, J., Tirez, K., & Boeckx, P. (2013). Improving the management of nitrate pollution in water by the use of isotope monitoring: the δ15N, δ18O and δ11B triptich. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES, 49(1), 29–47.
Vancouver
1.
Widory D, Petelet-Giraud E, Bregnot A, Bronders J, Tirez K, Boeckx P. Improving the management of nitrate pollution in water by the use of isotope monitoring: the δ15N, δ18O and δ11B triptich. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES. 2013;49(1):29–47.
MLA
Widory, David, Emmanuelle Petelet-Giraud, Agnes Bregnot, et al. “Improving the Management of Nitrate Pollution in Water by the Use of Isotope Monitoring: The δ15N, δ18O and δ11B Triptich.” ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 49.1 (2013): 29–47. Print.
@article{3195145,
  abstract     = {In spite of increasing efforts to reduce nitrogen inputs into ground water from intensive agriculture, nitrate (NO3) remains one of the major pollutants of drinking-water resources worldwide, with NO3 levels approaching the defined limit of 50mgl1 in an increasing number of water bodies. Determining the source(s) of contamination in water is an important first step for improving its quality by emission control. The Life ISONITRATE project aimed at showing the benefit of a multi-isotope approach (15N and 18O of NO3, and 11B), in addition to conventional hydrogeological analysis, to track the origin of NO3 contamination in water. Based on land use and local knowledge, four distinct cases were studied: (1) natural soil NO3, (2) natural denitrification, (3) single source of NO3 pollution and (4) multiple sources of NO3 pollution. Our results show the added value of combining isotope information, compared to knowledge based on local authorities' experience, land use and the classical' chemical approach, by efficiently identifying the number and type of NO3 source(s) for each watershed studied.},
  author       = {Widory, David and Petelet-Giraud, Emmanuelle and Bregnot, Agnes and Bronders, Jan and Tirez, Kristof and Boeckx, Pascal},
  issn         = {1025-6016},
  journal      = {ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES},
  keyword      = {AQUIFER,IDENTIFICATION,OXYGEN,GROUNDWATER,DENITRIFICATION,NITROGEN,BORON ISOTOPES,water pollution,oxygen,nitrogen,nitrate,natural denitrification,isotope ecology,boron,isotope biogeochemistry,FRACTIONATION,COLLECTION,FRANCE},
  language     = {eng},
  number       = {1},
  pages        = {29--47},
  title        = {Improving the management of nitrate pollution in water by the use of isotope monitoring: the \ensuremath{\delta}15N, \ensuremath{\delta}18O and \ensuremath{\delta}11B triptich},
  url          = {http://dx.doi.org/10.1080/10256016.2012.666540},
  volume       = {49},
  year         = {2013},
}

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