办事指南

Paper chase

点击量:   时间:2019-03-06 12:09:02

By Rachel Nowak in Melbourne EVERY batch of paper has a characteristic chemical fingerprint that could soon help to solve crimes as diverse as kidnapping, counterfeiting and fraud, say Australian researchers. Crime investigations sometimes hinge on identifying the source of paper used for a ransom note, say, or to alter a business contract. But standard forensic methods often fail to do this with white office paper,