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Low-cost, time-resolved chemical characterization of atmospheric aerosols

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0018462
Agency Tracking Number: 0000234550
Amount: $180,000.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: 23b
Solicitation Number: DE-FOA-0001770
Solicitation Year: 2018
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-04-09
Award End Date (Contract End Date): 2019-04-08
Small Business Information
430 N. College Ave, Ste 430
Fort Collins, CO 80524-2675
United States
DUNS: 079527397
HUBZone Owned: No
Woman Owned: Yes
Socially and Economically Disadvantaged: No
Principal Investigator
 Gabriel Isaacman-VanWertz
 (540) 231-0011
Business Contact
 Patricia Keady
Phone: (970) 744-3244
Research Institution
 Virginia Polytechnic Institute and State University
 Gabriel Isaacman-VanWertz
419 Durham Hall, 1145 Perry St.
Blacksburg, VA 24061-1050
United States

 (540) 231-0011
 Nonprofit College or University

Currently the chemical composition of atmospheric particulate matter is measured either by off-line analyses of time-integrated filter samples, or by in-situ instruments requiring near-constant operator oversight. These measurement approaches result in sparse or limited data coverage. Despite the critical role of composition on the health and environmental impacts of particulate matter, there exist few time-resolved, long-term records of particle-phase chemical composition. New measurement approaches are needed that are robust, easy-to-operate, and suitable for DOE ARM and other atmospheric monitoring facilities for operationally-inexpensive measurements of particle composition. The proposed instrument will offer a robust and straightforward method for the on-line measurement of particle composition that provides moderate chemical and volatility detail with hourly time-resolution and little operator effort. This instrument will measure volatility-resolved particle-phase carbon and oxygen-to-carbon ratio, as well as inorganic sulfur, with the flexibility for future expansion to include nitrogen, phosphorous, or other atmospherically important elements. This instrument will provide hourly data of the parameters necessary for most existing models and descriptions of atmospheric particulate matter, with capital and operational costs that will allow substantially increased spatial and temporal extent of available data. Airborne particles from 0.005 - 2.5 micron will be captured as a concentrated “spot” deposit using our firm’s unique moderate-temperature, water- based condensation method that has been demonstrated in collecting samples for off-line analysis. It will be adapted here for on-line analyses by engineering a compact sample collection and thermal desorption cell.

* Information listed above is at the time of submission. *

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