Advertisement

Areal and Vertical Distribution of Nitrate Concentration in Piedmont Plain Aquifers (North-Western Italy)

  • Manuela LasagnaEmail author
  • Elisa FranchinoEmail author
  • Domenico Antonio De Luca
Conference paper

Abstract

Several areas in Piedmont plain (North-Western Italy) are characterized by nitrate concentrations higher than 50 mg/L, the maximum nitrate concentration accepted by Italian law. The Piedmont plain sector is the most important water reservoir of the Piedmont Region, due to its size, the characteristics of its deposits and the possibility of recharge. In the Piedmont plain groundwater, the origin of nitrate contamination is due to the increasing amount of synthetic nitrogenous fertilizers and organic manure used for agricultural purposes but also to septic tank effluents input. Univariate and bivariate statistics and concentration maps were used to describe the distribution of nitrate in Piedmont plain, both in shallow and in deep aquifers, to highlight the variation of nitrate levels from year 2000 to 2012 and to analyse the relation of nitrate versus well depth. The purpose is to create the basis for future investigations and insights about the nitrate sources and the attenuation processes in aquifers.

Keywords

Nitrate Alluvial deposits Multi-layer aquifer Denitrification Dilution 

References

  1. Bove A, Casaccio D, Destefanis E, De Luca DA, Lasagna M, Masciocco L, Ossella L, Tonussi M (2005) In: Regione P (ed) Idrogeologia della Pianura Piemontese (Mariogros Industrie Grafiche S.p.A., Torino), p 17Google Scholar
  2. Debernardi LL, De Luca DA, Lasagna M (2008) Correlation between nitrate concentration in groundwater and parameter affecting aquifer intrinsic vulnerability. Env Geol 55:539–558. doi:  10.1007/s00254-007-1006-1
  3. Debernardi L, De Luca DA, Lasagna M (2009) A specific vulnerability assessment method for nitrate contamination. Rend Online Soc Geol Ital 6:205–206Google Scholar
  4. Korom SF (1992) Natural denitrification in the saturated zone: a review. Water Resour Res 28:1657–1668CrossRefGoogle Scholar
  5. Lasagna M (2006) Nitrate in Piedmont plain groundwater: distribution, origin, attenuation and hydrogeological conditioning. Ph.D. thesis, Earth Science Department, University of Torino, ItalyGoogle Scholar
  6. Lasagna M, De Luca DA, Sacchi E, Bonetto S (2006) Studio dell’origine dei nitrati nelle acque sotterranee piemontesi mediante gli isotopi dell’azoto. Giornale di geologia applicata 2:137–143Google Scholar
  7. Lasagna M, De Luca DA (2008) Contaminazione da nitrati nelle acque sotterranee della pianura torinese-cuneese: quadro generale e ruolo dei corsi d’acqua. Giornale di Geologia Applicata 8:75–87Google Scholar
  8. Lasagna M., De Luca DA, Debernardi L, Clemente P (2009) Volumetric flow rate per unit perpendicular to the flow direction for the evaluation of aquifer attenuation capacity by means of the dilution process. Rend Online Soc Geol Ital 6:300–301Google Scholar
  9. Lasagna M, De Luca DA, Debernardi L, Clemente P (2013) Effect of the dilution process on the attenuation of contaminants in aquifers. Environ Earth Sci 70(6):2767–2784. doi: 10.1007/s12665-013-2336-9 CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Earth Science DepartmentUniversity of TurinTurinItaly

Personalised recommendations