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Sediment chronology and polycyclic aromatic hydrocarbon concentrations and fluxes in Cayuga Lake, NY

Technical Report ·
OSTI ID:5814087
We describe experiments aimed at determining the deposition history of energy-related, particulate-associated, potentially carcinogenic polycyclic aromatic hydrocarbons (PAH) deposited in the sediments of Cayuga Lake in the Finger Lakes Region of Central New York State. The sediment cores were chronologically dated from measurements of artificial and natural radionuclides (/sup 137/Cs, Pu-isotopes, /sup 210/Pb) and pollen. Diatoms and charcoal were used to determine historic changes in the Cayuga Lake basin. These methods showed agreement in chronology and also indicated that the sediments were not mixed or diffused to any great extent so that clear pollutant trends could be established. Historic changes in concentrations (ng/g dry wt.) and flux (ng/cm/sup 2//yr) of 3 to 7 ring PAH compounds were determined. Estimates of the atmospheric component of PAH flux to the sediments were made using the ratio of /sup 137/Cs inventories in sediments to that deposited on undisturbed soils.
Research Organization:
Department of Energy, New York (USA). Environmental Measurements Lab.; Wisconsin Univ., Madison (USA). Inst. for Environmental Studies
OSTI ID:
5814087
Report Number(s):
EML-451; ON: DE86011333
Country of Publication:
United States
Language:
English