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Analytical instrumentation

Intelligent FTIR System for Efficient Fuel Analysis

Author: Dr. Oliver Sauer on behalf of Ametek Grabner Instruments GmbH

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From the very beginnings of fuel characterisation, infrared spectroscopy was widely applied in the field of fuel analysis. Fuel, be it gasoline, diesel or jet fuel, consists of a complex mixture of hydrocarbons of which many have no characteristic absorption in the IR. They constitute the “matrix” or “background”. 

In contrast, aromatics, olefins and the many additives which are used to compose a fuel show absorption bands and are used to characterise it. The content of aromatics like benzene is strictly monitored by authorities and 
IR standard procedures exist to assess their concentrations, for example ASTM D6277 or ISO EN238.

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