Risk Analysis Of Persistent Chlorinated Organic Compounds, Dioxins And
PCBs In Japan
Author(s)
R. Masho & C. Tohyama
Abstract
Risk analysis of persistent chlorinated organic
compounds, dioxins and PCBs in Japan
R. ~ a s h o ' & C. ~ o h ~ a m a '
'center for Environmrntal Inform~~fion Science, ,Japan
'~nvironnwnlal Healllz Sciences Divi,~ion, hirtiol~ul lmtitrllc jbr
Environnzel~tul Studie,,, Jrrpan
Abstract
As a reference value to protect humans from possible deleterious effects of
dioxins (PCDD/Fs and co-PCBs), tolerable intake has been established as 4 pg-
TEQ/kg-bwiday in Japan. For the general Japancse public, the primary source of
exposure to dioxins is food, mostly through fish and its products. Co-PCBs
contribute to nearly half the total dioxin intake on TEQ (2,3,7,8-TCDD
equivalents) basis. The current level of exposure to dioxins for the general public
is estimated to be less than the above-mentioned tolerable intake. A sleep yearly
decline in dioxin release into the environnient is shown in the emission
inventory largely due to the reduction in waste incineration, which is the
predominant source on the inv
Keywords
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