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Determination of reference spectra of polycyclic aromatic compounds and chlorinated aromatic compounds


Identification and quantification of dangerous organic compounds in the environment, working area and consumer goods is a very difficult task because many of these compounds have isometric structures and similar chemical properties.

These compounds can be identified in complex environmental or biological matrices by their molecular spectra (UV, IR) Nuclear Magnetic Resonance Spectra or mass spectra. For instance, polycyclic aromatic compounds (PAC) detected in a complex mixture after extraction may be identified by comparing their actual fluorescence spectra with reference spectra compiled in a spectral atlas or stored in a data bank.

The objective of the project is to determine under well controlled conditions the reference spectra of organic compounds of environmental health concern such as PACs and chlorinated aromatic compounds. The measurements of UV, IR, NMR, MS spectra are to be performed by five experienced laboratories of the Member States.
The compilation and edition of reference spectra and complementary data will be undertaken at the Ispra Joint Research Center.


A first volume of 43 PACs reference spectra was issued in 1985 as a Spectral Atlas of Polycyclic Aromatic Compounds.
A second volume containing reference spectra of 45 new compounds - PAH, methylated PAH and N-Heterocycles was published in 1988.
The third volume of reference spectra of nitro-PAH, oxygenated PAH sulphur heterocyclics and metabolites has been published in 1991. The project is terminated.


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CSC - Cost-sharing contracts


Biochemisches Institut für Umweltcarcinogene
Aportación de la UE
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Sieker Landstraße 19
22926 Ahrensburg

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