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Pure polychlorinated dibenzo-p-dioxins RMs

Objective



Industrial and urban wastes contain organo-chlorinated by-products, the incineration of which may result in release into the atmosphere significant amounts of toxic substances such as dioxin and benzofuran derivatives.
Some of these compounds such as 2, 3, 7, 8 TCDD are extremely toxic and must be readily identified and quantified in environmental samples containing hundreds of other chlorinated substances and in foodstuff, eg milk and cheese. There is an urgent need to develop analytical methods which not only allow identification and quantification at ppb levels, but also provide clues to the source of contamination by means of the particular pattern of isomer distribution. Such methods generally require extensive clean up to avoid interference of other chlorinated compounds.
The objective of the project is to prepare reference solutions of pure dioxins congeners which could be easily handled by laboratories for calibrating their analytical methods.

RESULTS

A procedure for the gravimetric preparation of a toxic solution has been developed. Four pure PCDDs have been specially synthesized with a purity of at least 98% and used for the gravimetric preparation of nonane reference solutions are available as internal standard for trace analysis. Twelve other toxic (2, 3, 7, 8 position) TCCD (dioxins) and TCD (furans) solutions were prepared with commercially available pure substances. The purity of the compounds was weighed in two different laboratories.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Biochemisches Institut für Umweltcarcinogene
Address
Sieker Landstraße 19
22926 Ahrensburg
Germany

Participants (9)

Centre National de la Recherche Scientifique (CNRS)
France
Address
Chemin Du Canal
69390 Vernaison
Consiglio Nazionale delle Ricerche (CNR)
Italy
Address
Via Salaria Km 29.300 Monterotondo Stazione
00019 Roma
ECOLE POLYTECHNIQUE
France
Address
Route De Saclay
Palaiseau
European Communities - Commission of the European Communities - Joint Research Centre (JRC)
Italy
Address
Via E. Fermi 1
21020 Ispra
FEDERAL INSTITUTE FOR MATERIAL RESEARCH AND TESTING
Germany
Address
87,Unter Der Eichen 87
12205 Berlin
Institut des Radio-elements
Belgium
Address

Fleurus
SCK/CEN
Belgium
Address

Mol
TNO
Netherlands
Address

Delft
UNIVERSITAET BAYREUTH
Germany
Address
Universitaetsstrasse 30
Bayreuth