Organochlorine contaminants in fish from an arctic lake in Alaska, USA

A wide range of organochlorine pesticides and polychlorinated biphenyls (PCBs) were measured in muscle tissue and livers of lake trout (Salvelinus namaycush) and Arctic grayling (Thymallus arcticus) from Schrader Lake in Arctic Alaska. Results confirm the long-range transport of these contaminants to a US Arctic freshwater system. The most abundant group of compounds in all tissues was composed of PCBs. Mean concentrations of the sum of a selected group of PCB congeners ranged from 3.2 ng/g in grayling liver to 22.8 ng/g in trout liver and from 1.3 ng/g in grayling muscle to 6.6 ng/g in trout muscle (wet wt.). The second most abundant group was composed of chlordane-related compounds. No significant correlations of organochlorine concentrations with fish weight or length were observed for the data set as a whole.

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ISO Topics biota, climatologyMeteorologyAtmosphere, health
Primary Contact Rose Wilson
Other Contacts SusanAllen-Gil, DonaldGriffin, DixonLanders
Geo-keywords North Slope
Created October 1, 2021, 12:35 (AKDT)
Last Updated October 1, 2021, 12:37 (AKDT)