Spectroscopy has proven to be a non-destructive method for successfully analyzing different bodily fluids as well as other types of forensic materials such as drugs or fingerprints. This allows the evidence to be tested while still preserving it.
What is spectroscopy in forensic science?
Mass spectroscopy, also called mass spectrometry, is a scientific method that analyzes a sample of material to determine its molecular makeup. … Mass spectrometry has become a valuable tool in forensic science, where it can provide clues from the barest traces left by a suspect.
How is spectrometry used in forensics?
Liquid chromatography-mass spectrometry (LC/MS) is a forensics technique frequently used by toxicologists to analyse substances for suspected illicit drugs and to confirm the findings of presumptive drug tests. … Using the method, analysts can test dried blood to identify most drugs-of-abuse and their metabolites.
What spectroscopic methods do forensic scientists use?
Infrared spectroscopy and spectroscopic imaging, are robust, label free and inherently non-destructive methods with a high chemical specificity and sensitivity that are frequently employed in forensic science research and practices.
What is the use of the Spectroscopy?
Spectroscopy is used as a tool for studying the structures of atoms and molecules. The large number of wavelengths emitted by these systems makes it possible to investigate their structures in detail, including the electron configurations of ground and various excited states.
Why is spectroscopy important in forensic science?
Spectroscopy for forensic toxicology
Raman spectroscopy serves the field of forensic toxicology as an analytical tool to detect and quantify drugs in biological specimens. … This analytical tool is further beneficial with its low detection level.
How does a spectroscopy work?
Spectroscopy is the study of the absorption and emission of light and other radiation by matter. It involves the splitting of light (or more precisely electromagnetic radiation) into its constituent wavelengths (a spectrum), which is done in much the same way as a prism splits light into a rainbow of colours.
What is the definition of spectroscopy?
Spectroscopy, study of the absorption and emission of light and other radiation by matter, as related to the dependence of these processes on the wavelength of the radiation.
Why is a forensic lamp powerful?
Most importantly, it helps in the detection of latent finger prints that are important evidence in any crime scenes. The forensic lamps are made up of powerful light sources that can divide the light according to different groups of wavelengths that help in the easy visualization of the evidence.
What is UV spectroscopy used for in forensics?
The use of UV/visible spectroscopy has been recommended for forensic applications. UV/visible spectroscopy plays a key role in examining inks and fibers. The UV/visible spectrum directly quantifies the color of the sample and the technique is reliable and simple to carry out experimentally.
What is Microcrystal test?
Microcrystalline tests are chemical tests resulting in the formation of unique microcrystals for a given substance when combined with a specific reagent. Microcrystals are observed under a microscope and micrographs or microvideos constitute the results of the test.
What are the different types of spectroscopy?
- X-ray spectroscopy. In X-ray crystallography, X-rays of sufficient energy are used to excite the inner shell electrons in the atoms of a sample. …
- Flame spectroscopy. …
- AE spectroscopy. …
- AA spectroscopy. …
- Spark or arc (emission) spectroscopy. …
- Visible and UV spectroscopy. …
- IR and NIR spectroscopy. …
How plants are used in forensics?
Because even common plants have their own unique combination of pollens at different locations (called pollen signatures), forensic botanists may be able to link a suspect to a specific crime scene. … Forensic botanists may also study broken branches and plant material at the scene of a crime.
What is the basic principle of spectroscopy?
The basic principle shared by all spectroscopic techniques is to shine a beam of electromagnetic radiation onto a sample, and observe how it responds to such a stimulus. The response is usually recorded as a function of radiation wavelength.
What are the advantages of spectroscopy?
Raman spectroscopy has a number of advantages over other analysis techniques.
- Can be used with solids, liquids or gases.
- No sample preparation needed. …
- No vacuum needed unlike some techniques, which saves on expensive vacuum equipment.
- Short time scale.
What are the 3 basic types of spectroscopy?
There are many different types of spectroscopy, but the most common types used for chemical analysis include atomic spectroscopy, ultraviolet and visible spectroscopy, infrared spectroscopy, Raman spectroscopy and nuclear magnetic resonance.