Hoffman Erin M, Curran Allison M, Dulgerian Nishan, Stockham Rex A, Eckenrode Brian A
Oak Ridge Institute for Science and Education, Oak Ridge, TN, United States.
Forensic Sci Int. 2009 Apr 15;186(1-3):6-13. doi: 10.1016/j.forsciint.2008.12.022. Epub 2009 Feb 8.
Law enforcement agencies frequently use canines trained to detect the odor of human decomposition to aid in determining the location of clandestine burials and human remains deposited or scattered on the surface. However, few studies attempt to identify the specific volatile organic compounds (VOCs) that elicit an appropriate response from victim recovery (VR) canines. Solid-phase microextraction (SPME) was combined with gas chromatography-mass spectrometry (GC-MS) to identify the VOCs released into the headspace associated with 14 separate tissue samples of human remains previously used for VR canine training. The headspace was found to contain various classes of VOCs, including acids, alcohols, aldehydes, halogens, aromatic hydrocarbons, ketones, and sulfides. Analysis of the data indicates that the VOCs associated with human decomposition share similarities across regions of the body and across types of tissue. However, sufficient differences exist to warrant VR canine testing to identify potential mimic odor chemical profiles that can be used as training aids. The resulting data will assist in the identification of the most suitable mixture and relative concentrations of VOCs to appropriately train VR canines.
执法机构经常使用经过训练能检测人体分解气味的犬类，以协助确定秘密埋葬地点以及埋藏或散落在地表的遗体位置。然而，很少有研究试图确定能引起遗体搜寻（VR）犬做出适当反应的特定挥发性有机化合物（VOC）。固相微萃取（SPME）与气相色谱 - 质谱联用（GC - MS），以鉴定释放到顶空中与先前用于VR犬训练的14个单独人体组织样本相关的VOC。发现顶空中含有各类VOC，包括酸、醇、醛、卤素、芳烃、酮和硫化物。数据分析表明，与人体分解相关的VOC在身体各部位和组织类型之间存在相似性。然而，也存在足够的差异，需要进行VR犬测试，以识别可用作训练辅助工具的潜在模拟气味化学特征。所得数据将有助于确定最适合的VOC混合物及其相对浓度，以对VR犬进行适当训练。
