I2 TOXIC CONTAMINATION


Standards of contaminants for human health

           Maximum permissible
Substance   limit [ppm]
-------------------------------
Cd          0.01
Cyanides    N.D.
Organic     N.D.
Pb          0.1
Cr6+        0.05
As          0.05
Total Hg    0.0005
Alkyl Hg    N.D.
PCB         N.D.