Untersuchungen zur globalen Grundbelastung mit Umweltchemikalien

Buchert, H; Bihler, S; Ballschmiter, Karlheinz

doi:10.1007/bf00483710

Cited by 25 publications

(2 citation statements)

References 76 publications

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“…Previous studies assessed the anthropogenic contribution to their pollution using selected common pollutants (e.g. dichlorodiphenyltrichloroethane (DDT), polychlorinated biphenyls (PCB), hexachlorocyclohexanes (HCH), chlorinated benzenes, and terphenyls) ( − ). In addition, a strong local emission source situated at the Teltow Canal (see Figure ) was located.…”

Section: Introductionmentioning

confidence: 99%

Halogenated Organic Contaminants in Sediments of the Havel and Spree Rivers (Germany). Part 5 of Organic Compounds as Contaminants of the Elbe River and Its Tributaries

Schwarzbauer

Ricking

Franke

et al. 2001

Environ. Sci. Technol.

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To give a detailed and comprehensive view on the state of pollution of the Havel and Spree rivers nontarget screening as well as quantitative (target) analyses were applied to anoxic sedimentsamples. Based on nontarget GC/MS analysis a significant contribution to the anthropogenic contamination could be attributed to halogenated compounds. Three groups of contaminants corresponding either to diffuse or local contamination could be distinguished. Several commonly observable compounds including pentachloroanisol, polychlorinated biphenyles, 2,4-dichlorobenzoic acid, and chlorinated benzenes were detected with a distribution reflecting the contribution of nonpoint source emissions. A second group of chlorinated as well as brominated compounds was attributed to a strong point source emission at the Teltow Canal. At the sampling locations influenced by this point source the amount of mono- and dibrominated naphthalenes, chlorinated naphthalenes, and hexachlorocyclohexanes as well as DDT- and methoxychlor-related compounds increased significantly as compared to the background concentrations. A third group of halogen compounds emitted at this site consisted of the pesticides bromopropylate, methoxychlor, and chlorfensone as well as specific brominated aromatics including 2,4,6-tribromoaniline, 4,4'-dibromobenzophenone, and brominated benzenes. In addition, tetrabromochlorotoluenes, tribromodichlorotoluenes, dibromotrichlorotoluenes, and 2,2-bis(4-bromophenyl)acetic acid isopropyl ester were identified and are reported for the first time as environmental contaminants. The amounts of brominated compounds detected in Teltow Canal sediments occurred at a similar concentration level as their chlorinated analogues. Therefore, investigations on the occurrence of such a broad spectrum of brominated compounds as established in this work are presumably required more frequently to assess the environmental impact of this type of emissions.

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Section: Introductionmentioning

confidence: 99%

Halogenated Organic Contaminants in Sediments of the Havel and Spree Rivers (Germany). Part 5 of Organic Compounds as Contaminants of the Elbe River and Its Tributaries

Schwarzbauer

Ricking

Franke

et al. 2001

Environ. Sci. Technol.

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“…Treatment with pyrogenic copper powder, 3,4 metallic mercury 5,6 or silver on silica gel, 7 and conversion with tetrabutylammonium (TBA) sulfite to thiosulfate 8 or with polymeric triphenylphosphine (TPP) to the corresponding sulfide, 9 are recommended for the removal of elemental sulfur in extracts. However, commercial polymeric TPP must be purified by longterm extraction with two extractants before use, 9 while the preparation of pyrogenic copper powder (Raney-copper) and silver-loaded silica gel is also laborious.…”

Section: Introductionmentioning

confidence: 99%