Development of the inventory of heavy metals, dioxins, PAHs, HCB and PCBs for Sweden's reporting to CLRTAP

Sweden annually reports emissions to air to the UNECE Convention of Long-Range Transboundary Air Pollution (CLRTAP). As Party to the Convention, in 2000 Sweden ratified the Aarhus Protocols on Heavy Metal and on Persistent Organic Pollutants (POPs), committing to reduce its protocol emissions below the 1990 level. However, the Swedish emission inventories on HM and POPs are incomplete and associated with large uncertainties. The aim of this study was to assess the need for updating and improving the Swedish inventory reporting of heavy metals and POPs emissions to air. As information from industrial plants for some sectors are scarce, in this study information from the EEA/EMEP Guidebook and other Nordic countries have been scrutinized to enable good coverage of emission sources.

Based on the results of this study there are several indications that the heavy metals and POPs inventories are in need of improvement. Especially for HCB and PCB the need is substantial due to the lack of reported emission sources in the Swedish inventories. Based on information from annual plant-specific environmental reports, information on process-related heavy metals emissions from cement production and metal production are available for implementation or further quality review. Moreover, this study shows that where the inventories are lacking emission sources, information available in the Guidebook or in other Nordic countries’ emission inventories could be used as a complement. Several recommendations on improvements are presented in this study.