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Evaluation of Nitrate Sources and Transformation in the Oglio River Watershed

Abstract

In agricultural watersheds, the management of nitrate contamination in rivers requires the understanding of the existing relationships between soil, groundwater and surface water. The reported data correspond to three sampling campaigns, conducted in different seasons on surface water in a nitrate Vulnerable Zone of lombardy (northern Italy). The Oglio River, its tributaries, one spring, and effluents from wastewater treatment plants were sampled to determinen content, speciation and nitrate isotopes. The nitrate content increased along the Oglio River, mostly due to groundwater inputs. In summer, nitrate tended to decrease at the downstream reach, whilst this trend was not clear in autumn and winter campaigns. In summertime chemical and isotopic data suggest the presence of weak denitrification in the Oglio riverbed. Chemical, isotopic data and flow measurements allow the definition of the N fluxes and identification of sources and processes affecting the nitrate concentration in the river. (author)
Authors:
Delconte, C. A.; [1]  Dipartimento di Scienze Della Terra e dell'Ambiente, Universita di Pavia (Italy)]; Sacchi, E.; [2]  Istituto di Geoscienze e Georisorse, CNR, U.O.S. di Pavia (Italy)]; Allais, E.; [3]  Racchetti, E. [4] 
  1. Istituto di Geoscienze e Georisorse, CNR, U.O.S. di Pavia (Italy)
  2. Dipartimento di Scienze della Terra e dell'ambiente, Universita di Pavia (Italy)
  3. ISO4 s.n.c., Torino (Italy)
  4. Dipartimento di Scienze Ambientali, Universita di Parma (Italy)
Publication Date:
Jul 15, 2013
Product Type:
Conference
Report Number:
IAEA-CN-186/73
Resource Relation:
Conference: International Symposium on Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Monaco (Monaco), 27 Mar - 1 Apr 2011; Other Information: 2 figs., 12 refs.; Related Information: In: Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies. Vol. I. Proceedings of an International Symposium| 547 p.
Subject:
54 ENVIRONMENTAL SCIENCES; DENITRIFICATION; EVALUATION; GROUND WATER; ISOTOPES; ITALY; NITRATES; RIVERS; SAMPLING; SEASONS; SPRINGS; SURFACES; WASTE WATER; WATER TREATMENT; WATERSHEDS
OSTI ID:
22122073
Research Organizations:
International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; ISBN 978-92-0-135610-9; TRN: XA13R0830078184
Availability:
Also available on-line: http://www-pub.iaea.org/MTCD/publications/PDF/Pub1580_vol1_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 229-236
Announcement Date:
Aug 27, 2013

Citation Formats

Delconte, C. A., Dipartimento di Scienze Della Terra e dell'Ambiente, Universita di Pavia (Italy)], Sacchi, E., Istituto di Geoscienze e Georisorse, CNR, U.O.S. di Pavia (Italy)], Allais, E., and Racchetti, E. Evaluation of Nitrate Sources and Transformation in the Oglio River Watershed. IAEA: N. p., 2013. Web.
Delconte, C. A., Dipartimento di Scienze Della Terra e dell'Ambiente, Universita di Pavia (Italy)], Sacchi, E., Istituto di Geoscienze e Georisorse, CNR, U.O.S. di Pavia (Italy)], Allais, E., & Racchetti, E. Evaluation of Nitrate Sources and Transformation in the Oglio River Watershed. IAEA.
Delconte, C. A., Dipartimento di Scienze Della Terra e dell'Ambiente, Universita di Pavia (Italy)], Sacchi, E., Istituto di Geoscienze e Georisorse, CNR, U.O.S. di Pavia (Italy)], Allais, E., and Racchetti, E. 2013. "Evaluation of Nitrate Sources and Transformation in the Oglio River Watershed." IAEA.
@misc{etde_22122073,
title = {Evaluation of Nitrate Sources and Transformation in the Oglio River Watershed}
author = {Delconte, C. A., Dipartimento di Scienze Della Terra e dell'Ambiente, Universita di Pavia (Italy)], Sacchi, E., Istituto di Geoscienze e Georisorse, CNR, U.O.S. di Pavia (Italy)], Allais, E., and Racchetti, E.}
abstractNote = {In agricultural watersheds, the management of nitrate contamination in rivers requires the understanding of the existing relationships between soil, groundwater and surface water. The reported data correspond to three sampling campaigns, conducted in different seasons on surface water in a nitrate Vulnerable Zone of lombardy (northern Italy). The Oglio River, its tributaries, one spring, and effluents from wastewater treatment plants were sampled to determinen content, speciation and nitrate isotopes. The nitrate content increased along the Oglio River, mostly due to groundwater inputs. In summer, nitrate tended to decrease at the downstream reach, whilst this trend was not clear in autumn and winter campaigns. In summertime chemical and isotopic data suggest the presence of weak denitrification in the Oglio riverbed. Chemical, isotopic data and flow measurements allow the definition of the N fluxes and identification of sources and processes affecting the nitrate concentration in the river. (author)}
place = {IAEA}
year = {2013}
month = {Jul}
}