Gamma-emitting radionuclide measurements at the US geological survey national water quality laboratory, Denver, Colorado
Like sediment samples from Scofield Resevior in Utah were analyzed for 210Pb by the gamma-ray spectrometric method. The top 10 cm of surface sediment yielded excess 210Pb activity (excluding in situ 226Ra supported 210Pb) of 1.05 pCi/g dry weight and decreased to 0.25 pCi/g at a depth of 25 cm. Based on these data, sedimentation rate was approximately 0.49 cm/y for a total of 30 cm of lake sediment and a lake history of approximately 60 y. An alternative method of 210Pb measurements using wet chemical procedures followed by beta counting gave equivalent results. ?? 1982.
Citation Information
Publication Year | 1982 |
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Title | Gamma-emitting radionuclide measurements at the US geological survey national water quality laboratory, Denver, Colorado |
Authors | Che Yang In, E. Ambats |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Nuclear Instruments and Methods |
Index ID | 70010416 |
Record Source | USGS Publications Warehouse |