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Tentatively Identified Compounds

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Tentatively Identified Compounds (TICs) are a common analysis in the environmental sector. The principle is simple: using a mass spectrometer and a library of known chemicals, it is possible to identify an unknown chemical in a sample. At Envirolab our skilled analysts take the time to interpret and report the 10 largest identified peaks, providing they are a suitable library match. Generally the reported compounds are reliably identified, with some ambiguity around structural isomers (it can't differentiate between o-cresol and m- or p-cresol, for example). More 'tentative' is the concentration that is reported. Since the instrument is not calibrated for these unknown compounds, the reported result is an estimate of concentration at best, in any laboratory that reports TICs. A more appropriate name would be 'Tentatively Quantified Compounds'.

 

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For details about all of our services, including those included in this update, contact us at ask@envlab.co.uk or call us on 0161 368 4921.

 

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