Concentrations of PCB isomers, polychlorinated/brominated dibenzo-p-dioxins (PCDDs/PBDDs) and dibenzofurans (PCDFs/PBDFs), polybrominated biphenyl ethers (PBBEs), and total extractable organic halogen (EOX) were determined in carp (Cyprinus carpio) of three age classes collected from the Buffalo River, New York.
Total PCBs concentrations exceeded the United States Food and Drug Administration's tolerable level of 2 mug/g (wet wt) in all the three age classes.
Concentration ranges of total PCDDs and PCDFs were 27-146 and 22-99 pg/g, respectively.
Among several of the 2,3,7,8-substituted isomers detected, OCDD and OCDF were the most predominantly noticed congeners.
Noticeable concentrations of PBBEs were found with a major contribution from tetra-BBEs.
Extractable organochlorines (EOCl) were the highest in the total EOX family followed by organobromines and organoiodines.
The known organochlorines such as PCBs and DDT accounted for 13-58% of the EOCl, suggesting the presence of considerable levels of other unknown organochlorines.
The estimated allowable consumption rates of carp based on the risk assessment method were much lowerthan the actual consumption values available for the Great Lakes states.
Elevated concentrations of PCB isomers other than dioxins and furans suggest the need to protect humans from the consumption of PCB-contaminated carp from the Buffalo River.
Mots-clés Pascal : Accumulation biologique, Concentration, Poisson comestible, Risque, Organochloré, Polluant, Toxicité, New York, Biphényle(polychloro), Dibenzo-p-dioxine(polychloro), Dibenzofurane, Cyprinus carpio, Dibenzo-p-dioxine(polybromo), Biphényle éther(polybromo), Rivière Buffalo, Etats Unis, Amérique du Nord, Amérique, Hydrocarbure chloré, Halogène Composé organique, Pisces, Vertebrata
Mots-clés Pascal anglais : Biological accumulation, Concentration, Edible fish, Risk, Organochlorine compounds, Pollutant, Toxicity, New York, Polychlorobiphenyl, Cyprinus carpio, United States, North America, America, Chlorocarbon, Halogen Organic compounds, Pisces, Vertebrata
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0485090
Code Inist : 002A14D05H1. Création : 01/03/1996.