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Sensors & Electronics

Chemical Sensors

Improved Sensing using Preconcentrators (221)

Problem: Improved analyte detection sensitivity and specificity are needed to meet many application requirements.

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

PNNL Solution:

  • Use preconcentrating materials to enrich target analyte (sensitivity)
  • Use controlled analyte release to separate confounding signals to improve detection specificity
  • Develop materials and devices to meet various vapor and liquid phase application requirements
  • Use for lab and field applications

Capabilities Employed to Meet Client Needs: Material science; chemical interactions with materials; selective material interactions; preconcentrator device design to provide efficient collection and controlled release; preconcentrator interface design for sample collection from ambient environment (vapor or liquid) and controlled release to sensor/instrument; performance characterization; practical device development for field and laboratory applications. (This capability applied to sensing and analytical applications builds on PNNL's extensive background in chemistry and materials used for chemical separations applications for government and industrial clients.)

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Contact: Bob Wright

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