Tentatively Identified Compounds TICs

Meaning, Term, and Glossary Definition - What is Tentatively Identified Compounds TICs?

TICs or Tentatively Identified Compounds are those which can be detected by an analytical method but concentration cannot be confirmed without additional analytical testing. For instance, a gas chromatograph/mass spectrometer instrument can be calibrated to identify and quantify the concentrations of a number of target compounds. However, additional compound spectra may be detected for which instrument was not calibrated. Their identity can be confirmed with a search of the spectral library of compounds to find a match, but the concentration cannot be confirmed without running a known standard of the tentative matched compound. Sometimes no good match for the compound can be found, so only the class of compound can be identified (i.e. it's an alkane)

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Analytical testing dots

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Analytical testing dots

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Analytical testing dots