title: Polychlorinated biphenyls in polysulfide sealants--occurrence and emission from a landfill station.
abstract: Approximately 80,000 kg polysulfide sealant containing 10,000-18,000 kg polychlorinated biphenyls (PCB) was deposited at a Swedish municipal landfill station during 1965-1973. Investigations during 1994 showed that soil layers underneath the landfill had concentration of PCB not alarmingly high. The concentration of PCB congeners in ground water samples was elevated 4-750 times compared to a reference sample. Based on samples of ground water, leachate water, and flux chambers measuring evaporation of PCB from the landfill surface, the emission of PCB was estimated to be 1 g sigmaPCB/yr. This very low rate was attributed to the high sorptive capacity of the sealant. Compared to a reference site, the evaporation flux was elevated for the most volatile congeners, but factors 20-1400 lower than from another landfill which was contaminated with PCB in paper-pulp fibres.
authors.affiliation: Institute of Applied Environmental Science (ITM), Stockholm University, SE-106 91 Stockholm, Sweden.
authors.forename: N Johan
authors.initials: NJ
authors.lastname: Persson
authors.forename: Harald
authors.initials: H
authors.lastname: Pettersen
authors.forename: Rasha
authors.initials: R
authors.lastname: Ishaq
authors.forename: Johan
authors.initials: J
authors.lastname: Axelman
authors.forename: Cecilia
authors.initials: C
authors.lastname: Bandh
authors.forename: Dag
authors.initials: D
authors.lastname: Broman
authors.forename: Yngve
authors.initials: Y
authors.lastname: Zebühr
authors.forename: Tommy
authors.initials: T
authors.lastname: Hammar
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D003252:Construction Materials; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis*; D006256:Hazardous Waste; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis; D013548:Sweden; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D000393:Air Pollutants; D004785:Environmental Pollutants; D006256:Hazardous Waste; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls