Standards for Mercury
Various laws in Japan regulate and set standards for mercury. The following is a list of relevant, domestic standards:
|
Types of Standards |
Total Hg |
Alkyl mercury compounds |
|
Standards for disposal of domestic wastes and industrial wastes in landfill site (leachate-controlled type) |
＜0.005mg/L |
Not to be detected |
|
Standards for discharge of effluent from final landfill site |
||
|
a. Hg in effluent b. Hg in surrounding groundwater |
＜0.005mg/L ＜0.0005mg/L |
Not to be detected Not to be detected |
|
Standards for atmospheric emission |
||
|
a. Waste incinerator b. Incinerator for sludge which contaminated by mercury |
50μg/Nm3 100μg/Nm3 |
Not set Not set |
|
Standards for working environment |
＜0.025mg/m3 *1 |
＜0.01mg/m3 *2 |
*1 Excluding mercuric sulfide (HgS).
*2 Limited to ethyl and methyl compounds.