PCB patterns in herring and pike with special regard to co-planar congeners
Conference
·
OSTI ID:197544
- Stockholm Univ. (Sweden)
This study investigates the patterns of PCB in two aquatic organisms, herring and pike. The aim is to establish a basis for a model for estimating the levels of co-planar PCBs from the concentrations of nonplanar congeners. The chosen fish populations reflect differences in species, age, habitat (locations) and time of catch, as well as differences in total PCB concentrations. More stable patterns would be presumed, the more homogeneous the population. Herring were sampled at two locations, one in the Bothnian Bay (Harufjaerden) and one in the Southern Baltic (Utlaengan). Two age classes were sampled at each location, 2- and 6-year olds, respectively at Utlaengan, and 2- and 5-year olds, respectively at Harufjaerden. Pike were sampled from Lake Bolmen in southern Sweden in 1992, and pike from the same location but sampled in 1971 were taken from the specimen bank. Ten individuals per population were analyzed. Thirteen PCB congeners were determined, namely PCBs 28, 52, 77, 101, 105, 118, 126, 1 38, 153, 156, 157, 169, 180, thus including the seven PCBs that are measured in the national monitoring program, in addition to three monoortho and three non-ortho PCBs. Regarding the possibility of creating a model for calculating the concentrations of the planar PCBs from those of the non-planar, the results look promising for PCB-126 and PCB-169, whereas PCB-77 shows a lower correlation to the non-planar congeners.
- OSTI ID:
- 197544
- Report Number(s):
- CONF-9511137--; ISBN 1-880611-03-1
- Country of Publication:
- United States
- Language:
- English
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