BS3 Harmful substances
PCBs (polychlorinated biphenyls) and DDT are Persistant Organic Pollutants (POPs). Production of PCB, its import, use or sale was totally forbidden in Finland in 1990. The use of DDT has been prohibited in Finland since 1976.
Gulf of Finland & Åland Islands include here sampling points in Hanko, Kotka and Åland. Gulf of Bothnia is reperesented by Pori and Kalajoki. The values are annual means.
Concentrations of PCB and DDT in the muscle of Baltic Herring (ug/kg, wet weight)
| PCB | DDT | |||||
Year |
Gulf of Finland & Åland Islands |
Gulf of Bothnia |
Year |
Gulf of Finland & Åland Islands |
Gulf of Bothnia |
|
1985 |
13.5 |
10.0 |
1985 |
14.6 |
8.0 |
|
1986 |
10.3 |
7.9 |
1986 |
11.2 |
6.6 |
|
1987 |
12.3 |
8.3 |
1987 |
15.7 |
6.9 |
|
1988 |
16.5 |
13.3 |
1988 |
13.4 |
6.6 |
|
1989 |
11.4 |
8.7 |
1989 |
10.4 |
4.8 |
|
1990 |
10.3 |
9.5 |
1990 |
7.9 |
5.3 |
|
1991 |
9.6 |
6.6 |
1991 |
8.3 |
4.0 |
|
1992 |
9.6 |
5.6 |
1992 |
8.6 |
5.1 |
|
1993 |
13.1 |
11.5 |
1993 |
8.4 |
7.3 |
|
1994 |
9.3 |
8.4 |
1994 |
5.7 |
3.6 |
|
1995 |
8.2 |
5.0 |
1995 |
5.2 |
2.9 |
|
1996 |
9.4 |
9.5 |
1996 |
|||
1997 |
9.7 |
13.1 |
1997 |
6.3 |
6.5 |
|
1998 |
12.4 |
8.5 |
1998 |
7.8 |
4.6 |
|
1999 |
7.0 |
5.7 |
1999 |
5.1 |
2.7 |
|
2000 |
2000 |
|||||
2001 |
4.7 |
3.6 |
2001 |
3.0 |
2.4 |
|
2002 |
4.7 |
2.5 |
2002 |
3.3 |
1.7 |
|
2003 |
2003 |
|||||
2004 |
2004 |
|||||
2005 |
9.4 |
7.5 |
2005 |
2.6 |
0.6 |
|
2006 |
2.8 |
2.8 |
2006 |
0.9 |
0.8 |
|
2007 |
3.1 |
2.0 |
2007 |
1.2 |
0.5 |
|
Links:
Hazardous substances (Helsinki Comission).
Contaminants in the Baltic herring by Finnish Institute of Marine Reseach (Helsinki Comission).
References:
Kiviranta, H., Vatanen, T., Parmanne, R., Hallikainen, A. and Koistinen, J. 2003. PCDD/Fs and PCBs in Baltic herring during the 1990s. Chemosphere, 50:1201-1216.
Olsonen, R. (ed.). 2008. FIMR Monitoring of the Baltic Sea environment - Annual Report 2007. MERI - Report Series of the Finnish Institute of Marine Research. No. 62. (http://www.fimr.fi/en/tietoa/itameren_tila/vuosiraportit/2007/en_GB/itameren_seuranta_2006/).