chemical fingerprint


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chemical fingerprint

n.
A unique pattern indicating the presence of a particular molecule, based on specialized analytic techniques such as mass- or x-ray-spectroscopy, used to identify a pollutant, drug, contaminant, or other chemical in a test sample.
References in periodicals archive ?
Even when the horn is ground down into a fine powder we can still find that chemical fingerprint to say where that rhino is from," she said.
Quantitative and chemical fingerprint analysis for quality control of Rhizoma Copticlis chinensis based on UPLC-PAD combined with chemometrics methods.
This important spectral region is where the majority of chemical fingerprints, or absorption features lie.
The resulting color pattern is like a chemical fingerprint.
This portable device, also used by law enforcement, can identify over 6,000 chemicals by comparing the unique chemical fingerprint to its onboard database.
The first is a property tagging solution, like clear nail varnish, that contains a chemical fingerprint.
Each bottle of the colourless, odourless, solution contains a unique chemical fingerprint which cannot be washed or scratched off.
The chemical fingerprint measured by RxSpec, Rzasa points out, is compared with a known database, providing a 100% assurance that the dispensed drug is correct in both type and concentration.
Some dated back ten years but the suspects were nabbed after their DNA - the body's chemical fingerprint - was compared with DNA from crime scenes.
This is probably a chemical fingerprint of Mars,'' said geologist Hap McSween, a member of the science team from the University of Tennessee.
Compounds absorb parts of the light spectrum differently - making a kind of chemical fingerprint.
Each fire has a unique chemical fingerprint in the soot, since the chemical components are determined by what burned.