Some new sources of polychlorinated dibenzodioxins (PCDDs) and dibenzofurans (PCDFs) in waste papers and recycled pulps
1994; Elsevier BV; Volume: 29; Issue: 9-11 Linguagem: Inglês
10.1016/0045-6535(94)90366-2
ISSN1879-1298
AutoresHelmut Santl, Ludwig Gruber, Elke Stöhrer,
Tópico(s)Analytical chemistry methods development
ResumoTwelve 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 dry 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 sources 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 ranged 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 μg I-TE/kg) were measured. It could be clearly shown that the use of pentachlorophenol (and its sodium salt) and printing inks cause an additonal PCDD/F input into the waste paper and therefore in recycled pulp products, too.
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