Reducing In-Use Deca-Brominated Diphenyl Ether (deca-BDE) Stocks in Japan

Dien, NT.; Hirai, Y.; Sakai, S. (2017) Presented at 4th International Conference on Final Sinks, Kyoto, Japan, October 26, 2017


The Stockholm Convention listed deca-brominated diphenyl ether (deca-BDE) as a new persistent organic pollutant (POP) in Annex A (elimination), with various specific exemptions (UNEP 2017). In Japan, the countermeasure on safety management for deca-BDE has been evaluated by the Ministry of Economy, Trade and Industry (METI) and Ministry of Environment (MOE). Deca-BDE had reportedly been used until 2014, and domestic demand for it has been gradually declining (from 10,000 tons in 1990 to 800 tons in 2014; JMOE 2015). The largest stock of deca-BDE is contained in consumer products currently in use, and the emissions from such products were estimated to be the largest source of airborne deca-BDE (Sakai et al. 2006). The aim of this study is to demonstrate how the estimation of in-use deca-BDE stock can help in drafting policy for depleting their emissions from society.


deca-brominated diphenyl ether; in-use stock; population balance model