Scene of crimes

Watling, R. J., Lynch, B. F., and Herring, D. (1997). Use of laser ablation inductively coupled plasma mass spectrometry for fingerprinting scene of crime evidence. Journal of Analytical Atomic Spectroscopy 12 195-203. 

Chemistry is often used to solve crimes. Soil samples from a suspect s shoes or from the tread of the car tyre used by the suspect is analysed for pH value. This is compared with the pH of the soil at the scene of crime. The DNA (from hair, fingernail, saliva etc.) of the suspect is determined by a special technique. This is called DNA finger printing . 

Chazottes, V., Brocard, C., and Peyrot, B. (2004). Particle size analysis of soils under simulated scene of crime conditions The interest of multivariate analyses. Forensic Sci. Int. 140, 159-166. 

Serial number restoration—> Examination of scenes of crime—>... 

Training of laboratory staff, police, and scene-of-crime officers—>... 

To demonstrate the variations in and complexity of the basic item involved in firearms crimes, the round of ammunition, a detailed knowledge of which can aid both the physical and chemical investigation of scenes of crime and the subsequent laboratory examination. 

The section also provided a 24-hour, 7-day/week call out service to the security forces. Forensic staff members are available to attend scenes of crime which are large, controversial, or too difficult for the police or civilian scenes of crime officers to deal with. There were aspects of scenes of crime examination that most other laboratories do not experience the possibility of booby traps or sniper attack the scenes were often in hostile areas, so that the time to examine a scene was sometimes very limited (before a riot erupted or a sniper got organized) and many scenes extended over a large area, involved a large number of people and exhibits, and were of a controversial nature. 

Firearms and associated items, ammunition, spent bullets, and spent cartridge cases recovered from arms finds, scenes of crime, and so forth provide useful information of an intelligence nature. 

Shouldn t you let a scene of crime team do this I said. 

It was a different scene-of-crime team from the one I d met before, at the site where Sa% Palmer had been found. They glanced at me as I crouched down at the edge of the dig but continued with what they were doing without comment. It was already late and they had a bng night ahead. 

One unusual application of LA-ICP-MS is for fingerprinting scene-of-crime evidence. The combination of this technique with ternary-plot pattern-recognition software was used to determine the origin of samples of steel (e.g. from safes, gun barrels, tools) and glass (e.g. floats, sheets, containers) [115]. 

Forensic chemistry is concerned with the application of the principles of chemistry and related sciences to the examination of physical evidence collected at scenes of crimes, e.g. blood stains, paint fragments, bomb residue, clothes, drug samples and hair. The samples could provide conclusive evidence linking a suspect to a crime. Results from chemical analysis are usually conclusive and can be used to support eye witness testimony especially when trials take place many months or even years after the offence. 

Recovery of evidence. Consider a scenario in which a piece of evidence could prove vital to the case if found at the scene of a murder. The scene of crime officer is not fully trained and fails to recognise its... 

For these various reasons it is suggested that the way forward is to discard the concept of the match altogether, and to use in its place precise probabilities of getting the observed deviation between the two bands (scene-of-crime and suspect) under the two hypotheses. In the case of the hypothesis of guilt, this probability would be calculated from a normal distribution determined by the measurement error. In the case of innocence, the probability would be... 

Other applications have been reported, in the field of medicine where suture threads have had harmful reactions in patients, and for analysing single fibres recovered from the scenes of crime. 

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