Gamma-emitting radionuclide measurements at the US geological survey national water quality laboratory, Denver, Colorado

Che Yang In; E. Ambats

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USGS · 70010416

Gamma-emitting radionuclide measurements at the US geological survey national water quality laboratory, Denver, Colorado

Che Yang In·E. Ambats

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Abstract

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.

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Che Yang In, E. Ambats. 1982. Gamma-emitting radionuclide measurements at the US geological survey national water quality laboratory, Denver, Colorado. https://pubs.usgs.gov/publication/70010416

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