Taupin J M
Victoria Forensic Science Centre, Victoria Police, Macleod, Australia.
J Forensic Sci. 1996 Jul;41(4):697-9.
Levels of trace evidence transfer were examined in a casework context. A girl was allegedly abducted in a car and rape attempted by the accused, who denied any contact with the victim. Clothing worn by the victim and the accused, and the covers from the front seats of the car, were analyzed for trace evidence. Three types of corresponding fibers and four possible pathways of transfer were identified. Synthetic fibers similar to those composing the car seat covers were located on the victim's clothing, consistent with direct transfer. Secondary transfer was indicated by dyed brown human head-type hairs (possibly originating from the accused's wife) located on the seat covers and on the victim's clothing. Secondary and possibly tertiary transfer was indicated by pink synthetic material and associated fibers (possibly originating from the victim's mother) located on the victim's clothing, a car seat cover and the accused's clothing. Light microscopy, comparison microscopy, and cross-sectioning techniques were used. The multiple fiber matches and the differing pathways and levels of transfer increased the strength of the association between the accused and the victim. After the fiber evidence was led at the trial, the accused pleaded guilty, thereby affirming the value of secondary transfer evidence.
在一个实际案件中对微量证据转移水平进行了检验。据称，一名女孩在一辆汽车中被绑架，被告企图强奸她，而被告否认与受害者有任何接触。对受害者和被告所穿衣物以及汽车前排座椅的座套进行了微量证据分析。确定了三种类型的相应纤维以及四种可能的转移途径。在受害者衣物上发现了与构成汽车座套的纤维相似的合成纤维，这与直接转移相符。在座椅套和受害者衣物上发现的染成棕色的人头型毛发（可能来自被告的妻子）表明存在二次转移。在受害者衣物、一个汽车座套和被告衣物上发现的粉色合成材料及相关纤维（可能来自受害者的母亲）表明存在二次转移以及可能的三次转移。使用了光学显微镜、对比显微镜和切片技术。多种纤维匹配以及不同的转移途径和水平增强了被告与受害者之间关联的强度。在审判中出示纤维证据后，被告认罪，从而证实了二次转移证据的价值。
