The primary aspect of the Controlled Odor Mimic Permeation System (COMPS) is that it provides a field deployable instant and reproducible source of known amounts of target odors. This technology consists of a permeable polymer container (chosen to suit target odor and release rate required), stored inside a non-permeable package. The design allows for the pre-equilibration of the target odors such that the outer surface of the inner package can saturate with odor during storage. Removal of the inner item then provides an instant and reproducible source of known target vapor flux. We have successfully demonstrated this technology by placing the target odor chemicals within permeable membranes such as low density polyethylene which are then sealed within a non-permeable membranes such as metallized polyester. This design has multiple advantages including preventing cross contamination when storing multiple odor targets (5-10 targets are commonly employed) as well as being light-weight disposable, low unit cost potential, no external power/operating unit/machinery/hardware, simple to use and providing a known reproducible concentration of the target odors to the detector in the field. The applications of these COMPS include the whole range of biological (e.g. detector dog) and electronic (e.g. field sensors) detectors with examples such as explosives (e.g. 2-ethyl-1-hexanol simulating plasticized explosives), drugs (e.g. 3,4-methylenedioxybenzaldehyde simulating ecstasy), human remains (including dimethyl disulfide and pentanoic acid) and live human scent (including 5-heptene-2-one and nonanol).
受控气味模拟渗透系统(CO
MPS)的主要方面是,它提供了一个现场可部署的即时和可重复的目标气味已知量源。该技术由一个渗透性聚合物容器(选择适合目标气味和所需释放速率的容器)组成,存放在一个非渗透性包装内。该设计允许目标气味预平衡,使内包装的外表面在存储期间饱和。然后,移除内部物品即可提供已知目标蒸汽通量的即时和可重复的源。我们已经成功地通过将目标气味
化学品放置在渗透膜内(例如低密度聚
乙烯),然后密封在非渗透膜内(例如
金属化聚酯),展示了这项技术。这种设计具有多个优点,包括在存储多个气味目标(通常使用5-10个目标)时防止交叉污染,轻量级一次性,低单位成本潜力,无需外部电源/操作单元/机械/硬件,易于使用并在现场为检测器提供已知可重复的目标气味浓度。这些CO
MPS的应用包括整个
生物(例如检测犬)和电子(例如现场传感器)检测器的范围,例如爆炸物(例如模拟塑化炸药的
2-乙基-1-己醇),毒品(例如模拟迷幻药的3,4-亚甲二氧基
苯甲醛),人体遗骸(包括
二甲基二硫化物和
戊酸)和活体人体气味(包括5-庚烯-2-酮和
辛醇)。