Trace Evidence Analysis using Elemental & Thermal Comparison Techniques in Hit & Run Case

Keshav S. Kapgate; Renuka V. Phadke; Charansing B. Ghoti; Ajit R. Kokare; Shivangi S. Apte; Vijay J. Thakre

Volume : VII, Issue : IX, September - 2018

Trace Evidence Analysis using Elemental & Thermal Comparison Techniques in Hit & Run Case

Keshav S. Kapgate, Renuka V. Phadke, Charansing B. Ghoti, Ajit R. Kokare, Shivangi S. Apte, Vijay J. Thakre

Abstract :

Physical evidences play an important role in forensic investigation of any crime. Sometimes analysis of these evidences are challenging because of trace quantity as they need all examinations such as determination of microchemical reaction, chemical composition and their comparison. The physical evidences such as paint and polymer in a hit and run case in similar context were successfully analyzed using Micro XRF and thermal methods. Elemental composition of paint was determined using Micro XRF technique and paint compositions at the site of collision of two vehicles were found matching. Similarly thermal properties of polymer were studied using simultaneous thermal analysis. The results of comparison using thermal analysis and differential scanning calorimetry of the polymer and glass fiber pieces at the crime scene tally with accused car bumper pieces and glass fiber pieces of the victim�s vehicle. Thus physical evidences left at the crime scene when properly collected and examined form an important evidence to link the accused with the crime.