Forensic examination of plastic drinking straws based on their physical characteristics and manufacturing marks

作     者：Alaric C.W.Koh Suat Ping Oh Shing Min Lim Sok Yee Yew Jean Chen Vicky Y.S.Chow Alaric C.W. Koh;Suat Ping Oh;Shing Min Lim;Sok Yee Yew;Jean Chen;Vicky Y.S. Chow

作者机构：Forensic Chemistry and Physics LaboratoryHealth Sciences AuthoritySingapore 

出 版 物：《Forensic Sciences Research》 (法庭科学研究（英文）)

年 卷 期：2020年第5卷第1期

页      面：64-73页

核心收录：

学科分类：08[工学] 0402[教育学-心理学(可授教育学、理学学位）] 0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0303[法学-社会学] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 0838[工学-公安技术] 0703[理学-化学] 100105[医学-法医学] 0702[理学-物理学] 10[医学] 

基　　金：Health Sciences Authority 

主　　题：Forensic sciences drug packaging plastics manufacturing marks tool marks straw discrimination 

摘      要：This work highlights the evidential value of examining plastic drinking straws to establish linkages between multiple sources for forensic intelligence,investigative or prosecution *** drinking straws are commonly encountered in drug cases,either as inhalational paraphernalia or as packaging ***,to the best of our knowledge,systematic studies on the evidential value of straws have not previously been carried *** this study,over 80 packets of clear and colourless straws—most of which were visually similar—were purchased from various commercial outlets in *** physical characteristics(viz.,polarizing patterns,thickness,circumference and mass per unit length)and the manufactur-ing marks of these straws were examined to assess their potentials for discriminating straws from different *** of polarizing patterns yielded a discrimination of approximately 69%,while thickness,circumference,and mass per unit length measurements resulted in lower *** microscopy of manufacturing marks was found to be the most discriminating among all techniques employed herein,with a discrimination of about 95%,even among straws with similar polarizing patterns.