Next Article in Journal / Special Issue
Impact of Spent Mushroom Substrates on the Fate of Pesticides in Soil, and Their Use for Preventing and/or Controlling Soil and Water Contamination: A Review
Previous Article in Journal
Air Quality and Hospital Outcomes in Emergency Medical Admissions with Respiratory Disease
Article Menu

Export Article

Open AccessArticle
Toxics 2016, 4(3), 16; doi:10.3390/toxics4030016

Groundwater Contamination by Uranium and Mercury at the Ridaura Aquifer (Girona, NE Spain)

1
Department of Fluid Mechanics, School of Industrial and Aeronautical Engineering of Terrassa (ETSEIAT), Universidad Politècnica de Cataluña, Colón 7–11, Terrassa, Barcelona 08222, Spain
2
Department of Geochemistry, Petrology and Geological Prospecting, University of Barcelona, Faculty of Geology, Zona Universitaria de Pedralbes, Barcelona 08028, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Javier Valdes-Abellan, Carmen Corada-Fernández and Lucila Candela
Received: 5 April 2016 / Revised: 9 June 2016 / Accepted: 5 August 2016 / Published: 16 August 2016
(This article belongs to the Special Issue Fate and Transport of Contaminants in Soil and Groundwater Systems)
View Full-Text   |   Download PDF [2989 KB, uploaded 16 August 2016]   |  

Abstract

Elevated concentrations of uranium and mercury have been detected in drinking water from public supply and agricultural wells in alluvial and granitic aquifers of the Ridaura basin located at Catalan Coastal Ranges (CCR). The samples showed high concentrations of U above the U.S. standards and the World Health Organization regulations which set a maximum value of 30 µg/L. Further, high mercury concentrations above the European Drinking Water Standards (1 μg/L) were found. Spatial distribution of U in groundwater and geochemical evolution of groundwater suggest that U levels appear to be highest in granitic areas where groundwater has long residence times and a significant salinity. The presence of high U concentrations in alluvial groundwater samples could be associated with hydraulic connection through fractures between the alluvial system and deep granite system. According to this model, oxidizing groundwater moving through fractures in the leucocratic/biotitic granite containing anomalous U contents are the most likely to acquire high levels of U. The distribution of Hg showed concentrations above 1 μg/L in 10 alluvial samples, mainly located near the limit of alluvial aquifer with igneous rocks, which suggests a possible migration of Hg from granitic materials. Also, some samples showed Hg concentrations comprised between 0.9 and 1.5 μg/L, from wells located in agricultural areas. View Full-Text
Keywords: uranium; mercury: groundwater; sediments; aquifer uranium; mercury: groundwater; sediments; aquifer
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Navarro, A.; Font, X.; Viladevall, M. Groundwater Contamination by Uranium and Mercury at the Ridaura Aquifer (Girona, NE Spain). Toxics 2016, 4, 16.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Toxics EISSN 2305-6304 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top