USA flag logo/image

An Official Website of the United States Government

A Compact, In-Situ Instrument for Organic Acids

Award Information

Department of Energy
Award ID:
Program Year/Program:
2004 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Aerosol Dynamics Inc.
935 Grayson Street Berkeley, CA 94710-2640
View profile »
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2004
Title: A Compact, In-Situ Instrument for Organic Acids
Agency: DOE
Contract: DE-FG02-04ER86179
Award Amount: $100,000.00


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.

Principal Investigator:

Susanne Hering

Business Contact:

Susanne Hering
Small Business Information at Submission:

Aerosol Dynamics, Inc.
2329 Fourth Street Berkeley, CA 94710

Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Colorado State University
Colorado State University
Fort Collins, CO 80523
Contact: Millie Still
Contact Phone: (970) 491-6586
RI Type: Nonprofit college or university