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High Sensitivity SO2 Monitor using Quantum Cascade Laser IR Absorption

Award Information

Department of Energy
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
32 d
Solicitation Number:
Small Business Information
Aerodyne Research, Inc.
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2011
Title: High Sensitivity SO2 Monitor using Quantum Cascade Laser IR Absorption
Agency: DOE
Contract: DE-FG02-10ER85818
Award Amount: $942,893.00


SO2 is an important ubiquitous aerosol precursor with anthropogenic, biogenic and geogenic sources. The sulfate aerosol produced from atmospheric oxidation of SO2 has a negative radiative forcing component that is highly uncertain due to its direct and indirect effects. Due to its potency as a remote clean atmosphere aerosol precursor and its capability to modify cloud properties, SO2 is a short lived greenhouse compound. Direct measurements of SO2 that are accurate, interference free, sensitive and rapid are needed to support particulate sulfate and aerosol instrumentation. The Phase I demonstration of the approach will lead to a Phase II instrument that will be further improved and field tested. The instrument is a major advancement over current commercial instrument capabilities, made possible by recent advances in technology using infrared quantum cascade lasers. In dedicated measurement campaigns and at remote clean air monitoring stations this technology will yield a sensitive, selective measurement of this important aerosol precursor. Commercial Applications and Other Benefits: The proposed instrument will provide the capability to measure atmospheric abundances of SO2 in real time in order to better asses H2SO4 production and subsequent aerosol or cloud modification. Improved understanding of aerosol and cloud properties will improve our understanding of global climate change and help evaluate the mitigation strategies. There is a worldwide market for such measurement systems in the environmental and aerosol research communities.

Principal Investigator:

Scott C. Herndon

Business Contact:

George N. Wittreich
Small Business Information at Submission:

Aerodyne Research, Inc.
45 Manning Road Billerica, MA -

EIN/Tax ID: 042471226
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No