Emissions of chlorinated paraffins in Stockholm: A substance flow analysis study
(English)Manuscript (preprint) (Other academic)
Chlorinated paraffins (CPs) are currently under consideration for classi-fication as persistent organic pollutants. They have been extensively used for many decades in a wide range of applications, particularly in industrial lubricants and building materials. However, very little is known about their levels in the technosphere or about the origins and quantities of their emission into the environment. In this study, sub-stance flow analysis was used to estimate CP emissions from the city of Stockholm, Sweden to different environmental media. The results indi-cate that 16 tonnes of CPs are added to the technosphere in Stockholm annually, and that approximately 0.5 tonnes are emitted to air and wa-ter annually. The estimated emissions to air and water were in reasona-ble agreement with independent emission estimates derived from envi-ronmental monitoring data. The emissions are not directly linked to the annual inflow; instead, they largely originate from the large quantity of CPs that have accumulated in the technosphere over many years. The main sources of the emissions are in-place paints and sealants. The vast majority of the CPs are expected to leave the technosphere as solid waste, but there are uncertainties regarding subsequent CP emissions from solid waste into the environment.
Chlorinated paraffins, CPs, substance flow analysis, emissions
Research subject Applied Environmental Science
IdentifiersURN: urn:nbn:se:su:diva-43557OAI: oai:DiVA.org:su-43557DiVA: diva2:357899