Laser Induced Fluorescence Monitoring of Solvent Recovery Processes

EPA Contract Number: 68D50112
Title: Laser Induced Fluorescence Monitoring of Solvent Recovery Processes
Investigators: Churchill, Russell J.
Small Business: American Research Corporation of Virginia
EPA Contact: Richards, April
Phase: I
Project Period: September 1, 1995 through March 1, 1996
Project Amount: $65,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1996) RFA Text |  Recipients Lists
Research Category: Ecological Indicators/Assessment/Restoration , SBIR - Monitoring , Small Business Innovation Research (SBIR)


Developments in on-site spent solvent recovery have implications for reduced environmental pollution in the dry cleaning, furniture and paint manufacturing industries as well as in a range of commercial services. Effluents from solvent recovery operations include fugitive emissions, vent stack gases and water/solvent mixtures. At present, the scale of solvent-recovery operations in certain industries is too small to allow cost-effective application of gas or liquid chromatographic instrumental methods, yet the total volume of pollutants discharged from these operations is environmentally significant. To remedy this situation, this proposal suggests the development of low-cost continuous solvent monitors based on near-infrared fluorescence. The innovation contained in the proposal is the combination of sensitive diode laser excited fluorescence methods with integrated methods of instrument design to achieve the Phase I Technical Objectives, which include:

  • evaluation of near-infrared fluorophores for solvent analysis,
  • design of an integrated laser excited fluorescence analyzer, and
  • acquisition of families of test data to provide information for use in instrument optimization and extensive field-testing in Phase II of the program.

The significance of the program is the reduction of solvent discharge and improvement is separation operations afforded by low-cost in situ chemical analysis.

Supplemental Keywords:

small business, SBIR, air emissions, engineering, chemistry., RFA, Scientific Discipline, Air, Ecosystem Protection/Environmental Exposure & Risk, Environmental Chemistry, Monitoring/Modeling, Analytical Chemistry, Atmospheric Sciences, Engineering, Chemistry, & Physics, Environmental Engineering, environmental monitoring, monitoring, spent solvent recovery, industrial waste, paint manufacturing, furniture , industrial emissions, fugitive emissions, air pollution, compliance, air sampling, ambient emissions, chemical detection techniques, field monitoring, laser induced flouresence studies, drycleaning , near infrared fluoresence, air quality field measurements, emissions contol engineering, industrial solvents, aerosol analyzers, air quality, atmospheric chemistry, real-time monitoring, solvents

Progress and Final Reports:

  • Final