Detection of canines are well-known to be valuable in the location of contraband, such as explosives or narcotics. More recently, canines have been trained and utilized in the detection of concealed mass storage devices that might contain evidence of illegal activity such as child pornography. To lay the analytical foundation for this detection work, research was carried out to determine the volatile organic compounds associated with mass storage devices (MSD) that could be used by trained canines for detection. Headspace analysis of a variety of electronic devices was performed using solid phase microextraction (SPME) with gas chromatography/mass spectrometry (GC/MS). Analyses found several volatile compounds common to SIM and SD cards, as well as USB drives, including 2-propenenitrile, styrene, isophorone, hydroxycyclohexyl phenyl ketone, and 2-furanmethanol, tetrahydro. Results indicated that mass storage devices do have a characteristic odor profile making detection with minimal false alerts feasible for trained canines.

译文

:众所周知,在诸如炸药或麻醉品等违禁品的地方,犬的检测很有价值。最近,已经对犬进行了训练和利用,以检测可能包含非法活动(例如儿童色情制品)证据的隐藏式大容量存储设备。为为该检测工作奠定分析基础,进行了研究以确定与大容量存储设备(MSD)相关的挥发性有机化合物,受训犬可以将其用于检测。使用固相微萃取(SPME)和气相色谱/质谱(GC / MS)对各种电子设备进行顶空分析。分析发现,SIM和SD卡以及USB驱动器共有几种挥发性化合物,包括2-丙烯腈,苯乙烯,异佛尔酮,羟基环己基苯基酮和2-呋喃甲醇,四氢化合物。结果表明,大容量存储设备的确具有特征性的气味特征,使得对受过训练的犬只进行最小限度的虚假警报检测即可。

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