Gas Chromatography is the process where the different elements of a chemical are separated in their different parts for human analysis. This is most commonly achieved by observing the way the elements respond with a particular solvent and identifying them by their particular retention period. Retention time is the time that it takes for a component to discharge the solvent, and the process normally occurs when a liquid stationary element is transformed into a gaseous cell component. The procedure has a wide Selection Of applications, which are discussed in more detail here, but among its most significant and widely-recognised applications is in the area of forensic science. The various ways that gas chromatography is used in forensics are summarized below.
Since gas chromatography is Helpful in identifying the individual elements and molecules present in a chemical, it is been implemented in forensic pathology to ascertain which compounds and fluids are found within a human body after death. This is very important in determining whether or the individual was drunk either from alcohol or drug abuse at the time of death, or indeed whether there is any poison or other harmful substance within their body. Naturally, this is imperative knowledge to determining cause of death and potential motive and offender in the event of foul play.
Crime Scene Testing
Gas chromatography are also Used to test samples found at a crime scene, if these be blood samples or fiber samples from clothes or other substances. This permits scientists to pinpoint precisely what and possibly who was present at the scene of the offense, and could even allow them to build theories on where the defendant or sufferer was before, based on the selection of material found. Gas chromatography is remarkably useful here, as it can accurately identify materials with no error margin that, in court, is imperative. The US Fire Administration Considers that arson is the largest cause of fires in the United States, and the second most important cause of injuries and death, and therefore, arson investigation in forensic science is a really important discipline.