Yamamoto, M.; Kokeguchi, K.; Yamamoto, G.; Yamaguchi, N.; Ohtsuka, K.; Sakai, S. (2011) Organohalogen Compounds, 73: 388-391
Introduction
Stockholm convention, which was adopted in 2001 and came into force in May 2005, aims to reduce the emission and eliminate the usage of Persistent Organic Pollutants (POPs) through a legally binding international framework. Unintentionally produced POPs in the convention include PCDD, PCDF, HCB and PCB (included when the convention came into force), and Pentacholorobenzene (added in August 2010). Understanding the state of emission of these unintentionally produced POPs and measures to counter emission through the implementation of BAT/BEP guidelines is desired.
The situation of the understanding of the state of emission of PCDD/F from 61 countries, PCBs from 30 countries and HCB from 33 countries has been made public in the homepage of the secretariat of Stockholm Convention1. There are a lot of countries which have not determined their amount of HCB and PCB emission. In 2008, Emission from European community (EC), United Kingdom of Great Britain and Northern Ireland (UK) and Japan are comparatively larger than amounts disclosed by other countries.
Emission factor of Japan has been calculated using data obtained from actual measurement. Air emission factors for HCB and PCB has already been reported in 20082 and 20093. This paper reports the air emission factor of PeCB and revisions of the air emission factors of HCB and PCB caused due to existence of facilities which have changed their equipments, raw materials or operation methods hence impacting the emission factors.