Ventilation as mitigation of PCB contaminated air in buildings: Review of nine cases in Denmark

Nadja Lyng, Niels Trap, Helle Vibeke Andersen, Lars Gunnarsen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)

Abstract

The effect of ventilation on indoor concentrations was evaluated in 9 buildings constituting a total of 30 rooms. All cases had interior and/or exterior sealants containing PCB as primary source. Criteria for inclusion in the evaluation were that the indoor concentrations of PCBtotal
In the remaining four cases, the pressure difference between the room measured and the surroundings showed a tremendous effect on the concentration as opposed to the effect of ventilation. Pressure differences might affect the emission of PCB by motion of air through gaps and cracks along the PCB sealants. were measured in the same room at least twice and under different ventilation conditions. In general, PCB concentrations decrease with increased ventilation making the effect of ventilation to reduce human exposure feasible. In 26 case rooms, the mean reduction of the concentration was found to be 51% (median; 64%), even though the effect of ventilation spanned hugely from a 100% decrease to an 83% increase of the concentration. In the remaining four cases, the pressure difference between the room measured and the surroundings showed a tremendous effect on the concentration as opposed to the effect of ventilation. Pressure differences might affect the emission of PCB by motion of air through gaps and cracks along the PCB sealants.
Original languageEnglish
Title of host publicationProceedings Indoor Air 2014
Number of pages8
Place of PublicationHong Kong
PublisherISIAQ
Publication date9 Jul 2014
EditionUSB-stick
Article numberHP 1239
Publication statusPublished - 9 Jul 2014
Event13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014: The 13th International Conference on Indoor Air Quality and Climate - Hong Kong, Hong Kong
Duration: 7 Jul 201412 Jul 2014

Conference

Conference13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014
CountryHong Kong
CityHong Kong
Period07/07/201412/07/2014

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