Results for samples collected in 1971 and 1982 show no significant changes although the means for PCB concentrations were 7.4 μg/g and 4.0 μg/g (wet weight, blubber) for each year respectively, suggesting an improvement (Addisson et al., 1984).
On ne constate aucun changement significatif entre les résultats obtenus en 1971 et ceux de 1982. La teneur moyenne respective de 7,4 μg/g et 4,0 μg/g (poids humide, graisse) serait signe d'une amélioration (Addison et coll., 1984).Giga-fren Giga-fren