Multiplexed Chemical Sensor for Water Security

EPA Contract Number: EPD05034
Title: Multiplexed Chemical Sensor for Water Security
Investigators: Farquharson, Stuart
Small Business: Real-Time Analyzers, Inc.
EPA Contact: Richards, April
Phase: I
Project Period: March 1, 2005 through August 31, 2005
Project Amount: $69,994
RFA: Small Business Innovation Research (SBIR) - Phase I (2005) RFA Text |  Recipients Lists
Research Category: SBIR - Homeland Security , Small Business Innovation Research (SBIR) , Health Effects


The goal of this research project (through Phase III) is to develop a chemical sensor that can be multiplexed into water distribution systems to provide early warning of poisoned water supplies. This will be accomplished by developing surface-enhanced Raman (SER) sensors that can be integrated into water supply systems and coupled to a central Raman analyzer via fiber optics. In Phase I, Real-Time Analyzers, Inc., will develop the sensors to selectively detect several chemical agent hydrolysis products, toxic industrial chemicals, and pesticides at concentrations below 1 mg/L in flowing streams in 10 minutes.

In Phase II, Real-Time Analyzers will interface the SER sensors into optical probes that tie into selected water distribution points, improve sensitivity to 10 μg/L in 10 minutes for 30 analytes, and develop multiplexing software compatible with supervisory control and data acquisition systems. Sensitivity, selectivity, and process capabilities will be evaluated using actual chemical warfare agents at Aberdeen Proving Ground under a subcontract.

Supplemental Keywords:

small business, SBIR, multiplexed chemical sensor, water distribution systems, surface-enhanced Raman sensor, SER, fiber optics, chemical warfare agents, water security, chemical agent hydrolysis products, toxic industrial chemicals, pesticides, optical probes, water distribution points, EPA, RFA, Scientific Discipline, INTERNATIONAL COOPERATION, Water, Ecosystem Protection/Environmental Exposure & Risk, Environmental Chemistry, Monitoring/Modeling, Environmental Monitoring, Drinking Water, Environmental Engineering, monitoring, real time analysis, homeland security, chemical characteristics, environmental measurement, chemical contaminants, early warning, analytical chemistry, surface enhanced Raman scattering, drinking water contaminants, real-time monitoring, water monitoring

Progress and Final Reports:

  • Final
  • SBIR Phase II:

    Multiplexed Chemical Sensor for Water Security  | Final Report