PMID- 16844199 OWN - NLM STAT- MEDLINE DCOM- 20061113 LR - 20171116 IS - 0048-9697 (Print) IS - 0048-9697 (Linking) VI - 370 IP - 1 DP - 2006 Oct 15 TI - Identifying contemporary and historic sources of soil polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in an industrial urban setting. PG - 61-9 AB - A study of soil polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/F) concentrations was undertaken in the vicinity of a municipal solid waste incinerator (MSWI) in Newcastle upon Tyne as a result of concerns raised by local residents about potential contamination from fugitive and stack emissions. The study area was divided into four sectors (north-east (NE), south-east (SE), north-west (NW) and south-west (SW)) around the MSWI, and sampling sites were located up to a distance of 2.25 km. Based on air dispersion modelling, the sampling density was four times greater in the NE (downwind) sector compared to the SW (upwind) direction, and twice as great in the NW and SE sectors. PCDD/F concentrations found in soil samples ranged from 6 to 1911 ng I-TEQ/kg DW with a median of 32 ng I-TEQ/kg DW. There was no evidence of elevated concentrations downwind of the MSWI compared to other directions, nor of any trend in concentration at increasing distance from the MSWI. We concluded, therefore, that the MSWI fugitive and stack emissions were not a major source of PCDD/F contamination. Analysis of PCDD/F homologue profiles showed that samples exhibiting furan-dominated and OCDD-dominated profiles and a profile characteristic of the MSWI ash occurred in distinct clusters. Those samples showing the furan-dominated profile had the largest PCDD/F concentrations measured as I-TEQ, followed by samples with the incinerator profile, the deposition profile, and the OCDD-dominated profile. We identified some contamination hotspots located in the SW and SE sampling sectors (upwind of the MSWI), and potential sources for these hotspots were sought by using historic land use data from maps of the locality dating back to 1856. We concluded that the cluster of very high concentrations of PCDD/F in soils showing the furan homologue profile were most likely to have resulted from the disposal of graphite electrode sludges from brine electrolysis carried out at a chemical works between the 1890s and the 1930s. FAU - Vizard, Catherine G AU - Vizard CG AD - School of Population and Health Sciences, William Leech Building, University of Newcastle, Newcastle upon Tyne NE2 4HH, UK. FAU - Rimmer, David L AU - Rimmer DL FAU - Pless-Mulloli, Tanja AU - Pless-Mulloli T FAU - Singleton, Ian AU - Singleton I FAU - Air, Vivienne S AU - Air VS LA - eng PT - Journal Article DEP - 20060717 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Benzofurans) RN - 0 (Dibenzofurans, Polychlorinated) RN - 0 (Polychlorinated Dibenzodioxins) RN - 0 (Soil) RN - 0 (Soil Pollutants) SB - IM MH - Benzofurans/*analysis MH - Dibenzofurans, Polychlorinated MH - *Environmental Monitoring MH - Incineration MH - Industry MH - Polychlorinated Dibenzodioxins/*analogs & derivatives/analysis MH - Soil/*analysis/standards MH - Soil Pollutants/*analysis MH - United Kingdom MH - *Urbanization EDAT- 2006/07/18 09:00 MHDA- 2006/11/14 09:00 CRDT- 2006/07/18 09:00 PHST- 2006/02/10 00:00 [received] PHST- 2006/06/01 00:00 [revised] PHST- 2006/06/08 00:00 [accepted] PHST- 2006/07/18 09:00 [pubmed] PHST- 2006/11/14 09:00 [medline] PHST- 2006/07/18 09:00 [entrez] AID - S0048-9697(06)00435-9 [pii] AID - 10.1016/j.scitotenv.2006.06.006 [doi] PST - ppublish SO - Sci Total Environ. 2006 Oct 15;370(1):61-9. doi: 10.1016/j.scitotenv.2006.06.006. Epub 2006 Jul 17.