Chlorinated paraffins (CPs) have been produced since 1930 and have found many applications, such as polymer additives, lubricants, paints, and flame retardants (1., 2.). The chemical stability and physical properties of the CPs makes them suitable substitutes for PCBs (2.). Because of their high distribution tendency CPs are detected in a wide variety of environmental samples, particularly in biological material (3., 4.). Toxicological studies with these mixtures revealed that short chain congeners (C10-C13) show the highest activities (5., 6.). The use of single congeners with different levels of chlorination as reference materials is essential (5., 6.). Recently, pure single C10 congeners have been synthesised for the first time by the research groups of Dr.M.Coelhan and Prof.Dr.H.Parlar. 

1.  Zitko, V.; Chlorinated Paraffins; in: O. Hutzinger (Ed.), The Handbook of Environmental Chemistry Vol 3, Part A, 149-156 (1980) Ullmann, Vol. A6, 323 (1986)
2.  Schmid, P. P., Miller, M.D.; J. Assoc. Off. Anal. Chem. 68, 427 (1985)
3.  Serrone, D. M., Birtley, R.D.N., Weigand, W., Millischer, M.; Food Chem. Toxicol. 25, 553 (1987)
4.  Müller, M.D., Schmid, P.P.; J. High Resolut. Chromatogr. 7, 33 (1984)
5.  Campbell, M., McConnell, G.; Environ. Sci. Technol. 14, 1209 (1980)
6.  Chlorparaffine. BUA-Stoffberichte, VCH (1993)
7.  Specht W., Pelz S., GilsbachW.; Fresenius J. Anal. Chem. 353,183 (1995)
8.  Coelhan, M., Saraci, M, Lahaniatis, E.S., Parlar, H.; Fresenius Environ. Bull., in print
9.  Friedman, D., Lombardo, P.; J. of AOAC 58, 703 (1975)

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