CONTAMINATION OF WINE WITH CHLORINATED HY DROCARBONS

In more than 30% of the investigated samples of wine we found residues of the halogenated hydrocarbons chloroforme (max 56 mu g/l) and trich lorethene (max 124 mu g/l). The analytical methods we used were headsp ace-GC (ECD) and headspace-GC-MS (SIM). Partially high concentrations of trichlorethene were determined in some french wine. The reason of t his contamination could not be found until now. The contamination of t he higher amounts of chloroforme is obviously caused by the presence o f haloformes during the cross flow filtration. According to our experi ence a migration of small amounts of chloroforme from cork is possible as well. In the meanwhile a 100 mu g/l maximum residue level for each chloroforme, trichlorethene and tetrachlorethene in wine has been est ablished (200 mu g/l for the sum)(5)).