Posted in | Chemistry

Exeter’s New Analytical Method Determines CHN Percentage in Polyfluorinated Compounds

Published on March 26, 2012 at 3:05 AM

By Cameron Chai

An analytical technique has been developed by Exeter Analytical in order to precisely find the percentage of nitrogen, hydrogen and carbon content present in the polyfluorinated compounds (PFCs).

Polyfluorinated compounds are repel fat, soil and water, and chemically and thermally stable. These compounds are non-biodegradable and get accumulated in the food chain and the environment. Products such as packaging materials, carpets, paper, textiles, cosmetics are using the PFCs, as they have specific technical qualities. PFCs are also used in the metallation, chemical synthesis, and semi-conductor and photo industries.

An elemental microanalysis system can examine general fluorine-based compounds for percentage CHN content under standard operating circumstances. Fluorine is absorbed as HF by the magnesium oxide present in the combustion tube reagent packing and the hydrogen gas is discharged. It is hard to combust the polyfluorinated samples and therefore, these samples can generate wrong high nitrogen and low carbon data.

The company’s reliable analytical process is specifically developed for these highly fluorinated compounds. The Model 440 Elemental Analyzer forms the basis for this analytical method.

The Exeter Analytical Model 440 benefits through a horizontal furnace design, and allows analysts to generate exact data from wide ranging samples without requiring re-optimization of system, thus saving both costs and time.

Source: http://www.exeteranalytical.co.uk/

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