SOME NEW SOURCES OF POLYCHLORINATED DIBENZODIOXINS (PCDDS) AND DIBENZOFURANS (PCDFS) IN WASTE PAPERS AND RECYCLED PULPS

Twelve samples of collected waste papers used for paper manufacturing were analysed. The PCDD/F values ranged from 2.96 to 9.97 ng I-TE/kg d ry matter. All samples showed a different pattern of PCDD/Fs compared to those of chlorine bleached pulps, therefore it is obvious that the measured PCDD/F levels could be caused by different contamination sour ces during former processing and use. The investigation of two carbon- less copy papers showed only low amounts of PCDD/F, 0.88 and 7.27 ng I -TE/kg, respectively. The PCDD/F values of four printing ink samples r anged between 17.5 to 90.1 ng I-TE/kg application mixture, whereby all samples showed the same PCDD fingerprints as found in the waste paper samples. In a sample of sodium pentachlorophenate (PCP-Na) very high amouts (3 374 mu g I-TE/kg) were measured. It could be clearly shown t hat the use of pentachlorophenol (and its sodium salt) and printing in ks cause an additional PCDD/F input into the waste paper and therefore in recycled pulp products, too.