Migration of PCBs from Sealants to Adjacent Material

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Abstract

PCB in sealants can migrate into porous surfaces like concrete and brick and
contaminate these materials. The study focuses on an analysis of concentration
profiles in relation to alleviation of PCB contamination. The PCB content was
determined in 20 samples of concrete and 6 samples of brick adjacent to outdoor
PCB-containing sealants. The samples were submitted to the laboratory for normal commercial assessment of PCB content in relation to the handling of waste from renovation works in Denmark. The results showed that the PBC concentration in the sealant not necessarily relate to the concentration of the adjacent material. The profiles of PCB concentration into the materials showed some variation, though in general there is a tendency of relative higher concentration near the primary source in concrete and longer migration at low concentrations in brick. The concentration profiles seemed to fit an exponential function for concrete and a power function for brick. Based on the sample series, a worst case scenario for migration was defined.
For concrete, it showed that a concentration of less than 50 ppm in the material
(hazardous waste) was reached at a distance of 5 cm, whereas for bricks the
distance was 3.5 cm.
Original languageEnglish
Title of host publicationProceedings of Healthy Buildings 2015
EditorsMarcel Loomans, Marije te Kulve
Number of pages8
Place of PublicationEindhoven
PublisherInternational Society of Indoor Air Quality and Climate
Publication date18 May 2015
Article numberPaper ID500
ISBN (Electronic)978-90-386-3889-8
Publication statusPublished - 18 May 2015
EventHealthy Buildings Europe 2015, HB 2015: Europe 2015 - TU/e, Eindhoven, Netherlands
Duration: 18 May 201520 May 2015

Conference

ConferenceHealthy Buildings Europe 2015, HB 2015
LocationTU/e
CountryNetherlands
CityEindhoven
Period18/05/201520/05/2015
SponsorAlfred P. Sloan Foundation, Ecophon Saint-Gobain, et al., Interface, TNO, Velux, Velux

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