Trends in nitrate concentrations and determination of its origin using stable isotopes (18O and 15N) in groundwater of the western Central Valley, Costa Rica

Ambio

Volumn 35, Issue 5, 2006, Pages 229-236

  Reynolds Vargas, Jenny ^a,b   Fraile Merino, Julio ^b   Hirata, Ricardo ^c,d  

^a Environmental Hydrology Laboratory   (Costa Rica)

^b UNIVERSIDAD NACIONAL   (Costa Rica)

^c UNIVERSITY OF SÃO PAULO   (Brazil)

^d Universidade de Sao Paulo ^*  (Brazil)

Author keywords

[No Author keywords available]

Indexed keywords

AQUIFER; DATA SET; GROUNDWATER; ISOTOPIC ANALYSIS; LAND USE CHANGE; MANAGEMENT PRACTICE; NITRATE; SEWAGE DISPOSAL; STABLE ISOTOPE; URBANIZATION;

CENTRAL AMERICA; COSTA RICA; SAN JOSE [COSTA RICA];

EID: 33748921713     PISSN: 00447447     EISSN: None     Source Type: Journal    
DOI: 10.1579/05-R-046R1.1     Document Type: Article

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44. This research was supported by funds from Universidad Nacional (UNA) and the International Atomic Energy Agency. The authors gratefully acknowledge the collaboration of the Costa Rican Institute of Water Works and Sewerage (AyA) and the National Meteorological Institute (IMN). We also appreciate the comments and suggestions provided by anonymous reviewers and the help of Sherry Gapper for the language revision.
45. First submitted 8 May 2005. Accepted for publication 18 Apr. 2006.