- infrared spectrophotometry
- (IR)An analytical technique which utilizes an instrument which passes infrared radiation through a sample or which bounces infrared radiation off the surface of a sample. A very sensitive heat detecting device measures the amount of infrared radiation absorbed as the wavelength of the radiation reaching the detector is changed. IR can give useful information about the type of compounds present in a sample, but it is not capable of precisely identifying a complex mixture. Infrared is very useful in identifying single solvent accelerants. Operates in the IR wavelength range. IR is employed by forensic scientists in the analysis of drugs, plastics, fibers, paint, and similar substances.
Forensic science glossary. John C. Brenner . 2012.
Look at other dictionaries:
spectrophotometry — See spectrophotometric. * * * Branch of spectroscopy dealing with measurement of radiant energy transmitted or reflected by a body as a function of wavelength. The measurement is usually compared to that transmitted or reflected by a system that… … Universalium
Spectrophotometry — Spectrophotometer In chemistry, spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength. It is more specific than the general term electromagnetic spectroscopy in … Wikipedia
spectrophotometry — Quantitative measurements of concentrations of reagents made by measuring the absorption of visible, ultraviolet or infrared light … Dictionary of molecular biology
analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… … Universalium
Коптюг — Коптюг, Валентин Афанасьевич Валентин Афанасьевич Коптюг Дата рождения: 9 июня 1931(1931 06 09) Место рождения: Юхнов, Западная область, СССР Дата смерти: 10 января 1997 … Википедия
Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal … Wikipedia
Phobos (moon) — Phobos Enhanced color view of Phobos obtained by Mars Reconnaissance Orbiter on March 23, 2008. Stickney crater, the largest, is on the right side. Discovery Discovered by … Wikipedia
Mars (planète) — Pour les articles homonymes, voir Mars. Mars … Wikipédia en Français
coal — coalless, adj. /kohl/, n. 1. a black or dark brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Cf. anthracite, bituminous coal, lignite. 2. a piece of glowing, charred, or burned wood or other… … Universalium
IRS — immunoreactive secretion; incident reporting scheme; infrared sensor; infrared spectrophotometry; insulin receptor species; insulin receptor substrate; insulin related substrate; Intergroup Rhabdomyosarcoma Study; internal resolution site;… … Medical dictionary