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Chemical Sensors

In-Situ Sensor for Lead and Cadmium (8)

Chemical Sensing

Problem: Determine concentrations of lead and cadmium in ground water at U.S. Environmental Protection Agency drinking water standard levels

Project Activity Scope (from Technical Overview Chart): Mechanisms through Instruments

PNNL Solution:

  • Developed compact, fieldable sensor based on electrochemical detection
  • Developed sensor suitable for deployment using cone penetrometer equipment
  • Developed second generation sensor and instrument for field evaluation
  • Adapted sensor so it can detect TNT explosives
  • Jointly received patent with NMSU

Capabilities Employed to Meet Client Needs: Stripping voltammetric measurement methods & principles; electrode material evaluation; probe configuration design; system parameter optimization; laboratory testing including assessment of real-time measurement performance, interference effects, short term stability, & overall system performance evaluation (demonstrating ppb detection limits); computer control and data acquisition software/system development; field test planning; field testing.

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Contact: Khris Olsen

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