Project Description
SPECTROSCOPY
APPLICATION NOTES -FORENSIC SCIENCES
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SPECTROSCOPY IN MODERN FORENSIC SCIENCES
Spectroscopy In Forensics
Forensic science studies and analyzes potential evidence from crime scenes to reveal important information about a crime that may have taken place. It is essential not to damage or significantly alter this evidence, and so forensic scientists must use non-destructive testing (NDT) methods such as spectroscopy to perform their analysis.
Forensic scientists can use spectroscopy methods to reveal the chemical make-up of blood samples and other bodily fluids. Electromagnetic radiation (usually from precisely calibrated lasers) is applied to the fluid sample. The resulting patterns of discrete bands of colors can be compared to a molecular spectra library to reveal what molecules the sample contains.
The sample is not affected by spectroscopic analysis like this and can be studied again with different methods or to seek confirmation. Another benefit of forensic science is that spectroscopy can be used to understand samples’ molecular make-up without removing the sample from the crime scene. Forensic scientists can take spectroscopy equipment and perform the analysis required there and then, supporting law enforcement to progress their investigations quickly.
Spectroscopy applied to bodily fluids in this way can reveal information about drugs or other intoxicants present in the body, any hazardous or poisonous substances present in the blood, and even stress levels (cortisol levels).
Forensic science also makes use of spectroscopy in the analysis of seized drugs. It can accurately identify chemical ingredients and match them with other seizures, helping law enforcement link up separate crimes.
Because it is non-destructive and can be performed safely, spectroscopy can also be used to analyze potentially hazardous unknown substances. Suspicious or alarming powders, liquids, or even gases at crime scenes can be safely investigated with spectroscopy, which will enable forensic scientists to precisely identify what they contain.
These examples serve to illustrate the rich application of spectroscopy in forensic science. Spectroscopy methods can be applied with numerous materials, electromagnetic radiation sources, and potential interaction types. Therefore, its uses in forensic science are wide-ranging and varied.
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