Sensors (Feb 2005)

Automated Ground-Water Sampling and Analysis of Hexavalent Chromium using a “Universal” Sampling/Analytical System

  • Richard J. Venedam,
  • Mary J. Hartman,
  • Dave A. Hoffman,
  • Scott R. Burge

DOI
https://doi.org/10.3390/s5010038
Journal volume & issue
Vol. 5, no. 1
pp. 38 – 50

Abstract

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The capabilities of a “universal platform” for the deployment of analyticalsensors in the field for long-term monitoring of environmental contaminants were expandedin this investigation. The platform was previously used to monitor trichloroethene inmonitoring wells and at groundwater treatment systems (1,2). The platform was interfacedwith chromium (VI) and conductivity analytical systems to monitor shallow wells installedadjacent to the Columbia River at the 100-D Area of the Hanford Site, Washington. Agroundwater plume of hexavalent chromium is discharging into the Columbia River throughthe gravels beds used by spawning salmon. The sampling/analytical platform was deployedfor the purpose of collecting data on subsurface hexavalent chromium concentrations atmore frequent intervals than was possible with the previous sampling and analysis methodsemployed a the Site.

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