[Organochlorine insecticide residues in tobacco and tobacco products. 2. Residue levels in raw tobaccos used in the DDR].

The levels of insecticide residues in GDR and imported leaf tobaccos are reported. With our analysis method 16 chlorinated hydrocarbons can be analyzed. No DDT was found in tobaccos from the People's Republic of Corea. The mean DDT level of tobaccos from Hungary was lower than 0,1 ppm, the possibly value of the future tolerance. With few exceptions samples of other countries contained less than 1 ppm of the total DDT-group. Only a cigar tobacco from Paraguay showed a very high residue level of 7,20 ppm. Except this sample the residue values are to be attributed to the DDT persistence in soil and the relatively high intake by tobacco, since with the exception of few countries no DDT is anymore used with tobacco. The lindane concentration was very low in all tabaccos. In some tobaccos traces or only very small quantities of other organochlorine residues were detected.