| 摘要 |
A method of screening aircraft passengers and/or cargo comprising loading an aircraft with passengers, cargo or both, circulating air within the aircraft so that the air is in contact with the passengers and/or cargo, expelling some of the circulated air from the aircraft, diverting a portion of the air being expelled from the aircraft through a chemical filter configured to retained evidence of a target substance, and analyzing the chemical filter to detect the presence of a target substance within the aircraft. |
| 主权项 |
1. A system for screening aircraft passengers or cargo comprising:
a sampling probe assembly; a sampling card comprising a substrate coated with filtering material, the filtering material being configured to retain vapors and particles of a target substance; a sampler housing configured to house the sampler card, wherein the sampling probe assembly is configured to either (i) divert a portion of the air expelled b an aircraft air circulation system through the sampler housing so that the sampling card is exposed to the diverted air, (ii) draw a sample from a cargo container using suction before the container is loaded into the aircraft so that the sampling card is exposed to the sample, or (iii) draw a sample from a passenger's clothing or hand luggage using suction prior to the passenger boarding the aircraft so that the sampling card is exposed to the sample, wherein the filtering material includes at least two materials selected from the group consisting of diphenylene oxide polymers prepared in chloroform, a carbon composite material, divinyl benzene, mono-alkyl substituted benzenes, di-alkyl substituted benzene, toluene, xylenes, and ethylbenzene. |
