| Abstract [eng] |
While the amount of polychlorinated biphenyls (PCBs) in our environment remains high – there is a threat for our surrounding and our society. Utilized improperly infected PCBs construction materials becoming an ecologic issue for our future generations after being transferred to dump. To fulfill Stockholm convention requirements Lithuania started to renew National Realization Plan (NRP), by including tools for management of new persistent organic pollutants (POPs) and specifying the scale of POP which were already included in Stockholm convention earlier, especially highlighting and analyzing industrial POP’s used in manufactures; from which the most important is PCB usage in closed, partly closed and open systems. Purpose – to investigate the scale of spread of PCB’s in Lithuania’s buildings and to suggest how to avoid the risks for environment and people health caused by these materials. Investigation methodology. Investigation performed relying on methodology consisting of theoretical and practical researches, which includes literature and information sources search and analysis, companies and expert’s survey, buildings register data analysis, investigation of construction materials used in buildings, theoretical balance of PSB’s formation. Results. Laboratory spectrometric analysis research revealed that 8 out of 10 samples might be infected by PCB’s. 4 out of 5 samples of paint, 3 out of 4 samples of concrete and one sealant sample shows that it may contain PCB compounds. Samples with positive results were taken from: 6 from living houses; 2 from public buildings. Theoretical PCB’s usage in Lithuania balance showed that there should be around 400 tons of PCB’s utilized for building construction in Lithuania. Building register data shows that in period from year 1950 – 1970 in Lithuania were was registered 171,282 buildings, with potential infection with PCB’s. 8,600 buildings were living apartments and 51,950 – public buildings. Assessing only living buildings and public buildings – one building may consist up to 6,6 kg of PCB’s. . |
