Analysis of PCBs and HCB in treated final effluent of Japanese paper mills
Government of Japan
June, 2, 2006
We analyzed polychlorinated biphenyl (PCBs) and hexachlorobenzene (HCB) in treated final
effluent of four paper mills in 2005. Table 1 shows the results of the analysis.
When it is high-precision(ex. When determination limit is 1 pg/L), HCB and PCBs may be
detected in treated final effluent of paper mills. But the formation and release of HCB and PCBs
are less understood from this potential source.
Table 1. Results of analysis
Absorbable
Paper mills
PCBs
HCB
Organic
(ng/L)
(ng/L)
Halogen
(μg /L)
A
B
1.2
14
Suspended
Solid
pH
(mg/L)
0.0089
910
13
6.5
0.065
2100
56
6.8
C
2.3
0.027
1600
30
7.3
D
1.9
0.0064
1400
59
7.2
0.001*1
0.001
10
1
－
Determination
limit
*１Each congeners’