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Electrospray Stand-off Detection of Trace Species in Air of Currency

Award Information

Agency:
Department of Homeland Security
Branch:
N/A
Award ID:
94790
Program Year/Program:
2010 / SBIR
Agency Tracking Number:
1021149
Solicitation Year:
N/A
Solicitation Topic Code:
H-SB010.2-001
Solicitation Number:
N/A
Small Business Information
Connecticut Analytical Corporation
696 Amity Road Route 63 Bethany, CT -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2010
Title: Electrospray Stand-off Detection of Trace Species in Air of Currency
Agency: DHS
Contract: D10PC20031
Award Amount: $96,461.00
 

Abstract:

  To detect and identify vapors of contraband currency, not to mention a selection mode for explosives, narcotics, chemical warfare agents, biological threats or other analyte species at trace levels in air, is an important problem with many ramifications. One widely used approach is based on transforming the molecules of those species into gas phase ions, which are then characterized by measurements of their mobility. Research is proposed on evaluating two novel and prospectively major improvements in this approach. One is to use a variation on Electrospray Ionization for the transformation of gaseous analyte molecules into ions. The other is to apply Pseudo Random Chopping techniques to ion mobility spectrometry. Preliminary experiments have shown that ESI can readily produce useful ion currents from species at sub parts per billion concentrations with very large SN ratios in open air, a requirement for sensitive standoff sniffing of contraband currency now performed using dogs. Moreover, ESI ionizes only polar molecules, ignoring all the nonpolar species that are a great majority of the molecules in air and other matrix gases. This selectivity eliminates most of the chemical noise that is a serious problem in IMS, where resolving power is limited.

Principal Investigator:

Joseph J. Bango
2033939666
jbango@ctanalytical.com

Business Contact:

Joseph J. Bango
2033939666
jbango@ctanalytical.com
Small Business Information at Submission:

Connecticut Analytical Corporation
696 AMITY RD BETHANY, CT 06524

EIN/Tax ID: 061279411
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No