Coincidental Chemical Signature Identifier
Abstract
In our proposal, we hypothesized that an individual possesses distinguishable characteristics, inherent in his chemical makeup, that differentiates him from all other people. The Phase I research was concerned with how existing analytical chemical instrumentation could assist in deciphering vapors emitted by humans which could result in a positive chemical identification signature. In the Phase I feasibility research study, we evaluated and tested methods for collecting, cataloguing and identifying human effluent vapors that were characteristic and unique to the individual. A variety of temperatures, enclosures, flow rates, filters and sample traps were used in the collection of vapors from three female and two male subjects in an attempt to distinguish one spectrum from another. Analysis of specimen was via the Olfax I mass spectrometer. It was found that all our subjects' spectra were comprised of essentially the same chemical compounds, with varying abundances. The two subjects, (1 male, 1 female), most frequently and thoroughly tested, revealed nominal mass intensity ratios for 53% of the mass numbers usually monitored in our studies differing by more than 20% from the paired spectrum. These differences suggest that distinguishing characteristics do exist from person to person and that given the proper tools and sufficient time, an instrument can be developed to meet military and commercial security requirements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1985
- Accession Number
- ADA161269