Chromatography is used to separate substances from crime scene samples to pinpoint information about materials. This information can then assist investigators with finding what was used by criminals.Know More
Chromatography is particularly useful in analyzing materials used in bombs and explosives. High-pressure liquid chromatography (HPLC) involves placing samples in a tube and extracting the materials using downward pressure. A machine is used to detect the speed at which the particles leave the tube. The measurements are used to identify the materials because they leave the tube at different speeds.
Chromatography is also useful to identify perpetrators of bank robberies. Money bundled in banks routinely contains a small dye bomb that projects bright red dye when triggered. Each dye has a unique chemical composition, and chromatography can be used to determine if there is the specific red dye on a suspect's clothing.Learn More
A building security checklist is used to help prevent damage and discourage crime. A building checklist should include categories for visible security, territorial reinforcement, lock-down and access security, and maintenance.Full Answer >
There are two main ways DNA is used to solve crimes: the DNA gathered from a crime scene is compared to the DNA of potential suspects, or the DNA gathered from the scene is run through a database in hopes of finding a match. The use of DNA is an integral part of an investigation.Full Answer >
Insects have been used to solve many crimes, including a 1991 "Ken and Barbie" murder and a 1997 murder of two young children. Forensic entomology is the study of insects primarily for medico-legal purposes. The primary purpose of carrying out a forensic entomology study is to estimate the time since death, states the Simon Fraser University Museum of Archaeology and Ethnology.Full Answer >
Chromatography is important because it is a versatile and small quantities of a material can be separated with ease, it is fast and accurate if the hardware is maintained. Chromatography is one of the most common techniques in analytical technology and needs only a few micrograms of material in order to work.Full Answer >