Centre for Forensic Science, University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia.
Forensic Sci Int. 2013 Mar 10;226(1-3):125-31. doi: 10.1016/j.forsciint.2012.12.017. Epub 2013 Feb 1.
This study investigated the prevalence of glass particles on the headwear and head hair of two different population groups; the general public who do not work with glass, and glaziers from O'Brien(®) Glass Industries who work with glass and have regular contact with broken glass. The 232 samples collected from the head hair and headwear from the random population resulted in the recovery of 6 glass fragments in total on 6 individuals (i.e. one fragment each). All of these fragments were from head hair samples with no multiple fragments recovered. The two headwear samples that were taken revealed no fragments. These results were in contrast to the survey that was conducted on the head hair and headwear of 25 glaziers from O'Brien(®), in which 138 glass fragments were found in total on 24 of the 25 glaziers. The size and number of fragments found in each sample were also generally larger for the glaziers group. The results from this study indicate that the prevalence of glass on the head hair and head wear of the random population is very low in comparison to the head hair and headwear of those who have regular contact with breaking glass. The significance of this finding with respect to the interpretation of glass evidence is also discussed.
一组是不接触玻璃的普通公众，另一组是经常接触碎玻璃的 O'Brien（®）玻璃工业公司的玻璃工人。从随机人群的头部毛发和头部穿戴物中采集了 232 个样本，结果在 6 个人（即每人 1 个碎片）总共发现了 6 个玻璃碎片。所有这些碎片均来自头部毛发样本，没有发现多个碎片。从两个头部穿戴物样本中均未发现碎片。这些结果与对 O'Brien（®）的 25 名玻璃工人的头部毛发和头部穿戴物进行的调查形成了鲜明对比，在该调查中，在 25 名玻璃工人中的 24 名身上总共发现了 138 个玻璃碎片。每个样本中发现的碎片大小和数量对于玻璃工人组来说通常也更大。本研究的结果表明，与经常接触碎玻璃的人群相比，普通公众头部穿戴物和头发上的玻璃出现频率非常低。本研究的结果对玻璃证据的解释具有重要意义。
