Migration of PCBs from Sealants to Adjacent Material

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Abstrakt

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.
OriginalsprogEngelsk
TitelProceedings of Healthy Buildings 2015
RedaktørerMarcel Loomans, Marije te Kulve
Antal sider8
UdgivelsesstedEindhoven
ForlagInternational Society of Indoor Air Quality and Climate
Publikationsdato18 maj 2015
ArtikelnummerPaper ID500
ISBN (Elektronisk)978-90-386-3889-8
StatusUdgivet - 18 maj 2015
BegivenhedHealthy Buildings Europe 2015: Europe 2015 - TU/e, Eindhoven, Holland
Varighed: 18 maj 201520 maj 2015

Konference

KonferenceHealthy Buildings Europe 2015
LokationTU/e
LandHolland
ByEindhoven
Periode18/05/201520/05/2015
SponsorAlfred P. Sloan Foundation, Ecophon Saint-Gobain, et al., Interface, TNO, Velux, Velux

Emneord

  • PCB
  • migration
  • byggematerialer

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