A Compact, In-Situ Instrument for Organic Acids

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-04ER86179
Agency Tracking Number: 76023B04-I
Amount: $100,000.00
Phase: Phase I
Program: STTR
Awards Year: 2004
Solicitation Year: 2004
Solicitation Topic Code: 20
Solicitation Number: DOE/SC-0075
Small Business Information
Aerosol Dynamics, Inc.
2329 Fourth Street, Berkeley, CA, 94710
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Susanne Hering
 (510) 649-9360
Business Contact
 Susanne Hering
Title: Dr.
Phone: (510) 649-9360
Email: susanne@aerosol.us
Research Institution
 Colorado State University
 Millie Still
 Colorado State University
Fort Collins, CO, 80523
 (970) 491-6586
 Nonprofit college or university
76023-Among the contributors to atmospheric pollution, carboxylic acids (including mono- and dicarboxylic acids, aliphatic ketoacids, and aromatic acids) are an important class of oxygenated, organic compounds in atmospheric aerosols. To better understand their sources and atmospheric transformation processes, an automated method for measuring their concentration is required. This project will develop a new, in-situ instrument for the routine identification and quantification of organic acids in the particulate phase. The system will combine an innovative method for particle concentration and collection with emerging ¿laboratory on a chip¿ capillary electrophoresis analytical methods. The analytical microchip, measuring a few centimeters across, will contain all of the critical components for chemical quantification, including the collection reservoir, capillary electrophoresis separation column, and conductivity detector. Phase I will: (1) adapt a water condensation technology for the direct deposition of submicrometer and nanometer diameter particles onto the analysis chip, (2) evaluate the capillary electrophoresis microchip analysis of directly deposited standards at the sub-nanogram level, and (3) interface these technologies to demonstrate the potential of the method using laboratory-generated aerosols. Commercial Applications and Other Benefits as described by the awardee: The instrument should find use in the routine, hourly monitoring of carboxcylic acids in atmospheric aerosols, substantially lowering the cost per sample and providing higher time resolution than possible with current methods.

* information listed above is at the time of submission.

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