Casework IRMS/ICPMS Examples in The Netherlands

In this poster a number of forensic IRMS/(LA-)ICPMS applications will be discussed. The IRMS/(LA-)ICPMS technique combination is used for forensic casework investigations within the NFI since 2003. Various applications were developed that demonstrate the strong discriminating power of this technique combinaton. IRMS and (LA-)ICPMS, alone or in combination, were used for various tape types, adhesives, paper, safe wall filling materials (combination of potassium alum and saw dust), jeans, motor oils, polyester trousers, polypropylene rope, polymethyl methacrylate objects, candles, jerry cans, remnants of burnt jerry cans, ink, glass, bullet lead and other metals. Some applications will be discussed in the presentation. Presently we intend to focus on • a tape investigation as part of an explosive device , • a series of arson investigations in which police cars were burnt using a modus operandi of placing polythene jerry cans filled with petrol on top of a car and lighting it. The investigation focused on comparing burnt jerry can remnants with other jerry cans, • a comparison of skimmer materials as encountered at a crime scene and with a suspect.