Strategic monitoring to account for rapid variations in the nitrate concentration of groundwater and surface water

Frans Van Geer*, Joachim Rozemeijer, Ype Van Der Velde, Hans Peter Broers, Gerrit De Rooij

*Corresponding author for this work

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Abstract

As part of two PhD projects, we installed ion-selective electrodes and passive samplers for monitoring nitrate concentrations in a 7 km 2 catchment and compared the results to grab samples. We also monitored nitrate concentrations at the catchment outlet. We tested the effectiveness of these monitoring approaches to estimate the long-term pattern in concentrations and loads at the catchment outlet. In addition, we built a regression model to predict the short-term variations in nitrate concentration. We used commonly available measurements of precipitation, discharge and groundwater head as explanatory variables. In this paper we present a comparison of different approaches to monitoring, and we discuss the potential of the ion-selective electrodes and passive samplers for practical nitrate monitoring.

Original languageEnglish
Title of host publicationConceptual and Modelling Studies of Integrated Groundwater, Surface Water, and Ecological Systems
Pages194-199
Number of pages6
Volume345
Publication statusPublished - 2011
EventSymposium H01 on Conceptual and Modelling Studies of Integrated Groundwater, Surface Water, and Ecological Systems, Held During the 25th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2011 - Melbourne, VIC, Australia
Duration: 28 Jun 20117 Jul 2011

Conference

ConferenceSymposium H01 on Conceptual and Modelling Studies of Integrated Groundwater, Surface Water, and Ecological Systems, Held During the 25th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2011
CountryAustralia
CityMelbourne, VIC
Period28/06/117/07/11

Keywords

  • Catchment hydrology
  • Groundwater protection
  • Ion-selective electrodes
  • Nitrate monitoring strategies
  • Nutrient leaching
  • Nutrient loads
  • Passive sampling
  • Water quality

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