Published 1976 | Version v1
Report Restricted

Age determination of sediments by Pb-210 using a plastic detector technique

Creators

  • 1. Kiel Univ. (Germany, F.R.). Inst. fuer Reine und Angewandte Kernphysik

Description

For age determination of sediments up to 150 years Pb-210 is suitable on grounds of its half life of 22.3 years. By a nitric acid disintegration lead is extracted out ot the sediment and subsequently precipitated electrolytically on Pt-electrodes. The activity of the sample resp. Pb-210 is measured via the alpha-activity of its granddaughter Po-210. As detector a plastic sheet (Cellulose nitrate, CA 80-15, made by Kodak) is used. Investigated was a sediment core from the Kieler Bucht, western Baltic Sea. The results let it appear possible, that the sediment is mixed up by shellfishes (cyprina islandica). (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Zur Altersbestimmung von Sedimentgestein bis zu 150 Jahren eignet sich Pb-210 aufgrund seiner Halbwertzeit von 22,3 Jahren. Durch Aufloesung in Salpetersaeure wird Blei aus dem Sediment abgesondert und elektrolytisch auf Platinelektroden abgeschieden. Die Aktivitaet der Probe resp. Pb-210 wird ueber die Alpha-Aktivitaet seines Tochterelements Po-210 gemessen. Ein Kunststoffblatt (Zellulosenitrat, CA 80-15, von Kodak hergestellt) wird als Detektor verwendet. Es wurde ein Sedimentkern aus der Kieler Bucht, Ostsee, untersucht. Die Ergebnisse lassen auf Beimischungen aus Schellfischen (cyprina islandica) schliessen. (orig.)

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Publishing Information

Imprint Pagination
8 p.
Report number
AED-Conf--76-421-025

Conference

Title
9. international conference on solid state nuclear track detectors and meeting of the Working Group on Space Biophysics of the Council of Europe.
Dates
30 Sep 1976.
Place
Neuherberg/Muenchen, Germany, F.R.

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
8293125
Subject category
S58: GEOSCIENCES; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AGE ESTIMATION; CELLULOSE; DIELECTRIC TRACK DETECTORS; LEAD 210; NITRATES; POLONIUM 210; REGIONAL ANALYSIS; SEDIMENTATION; SEDIMENTS; SOLVENT EXTRACTION
Descriptors DEC
ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBOHYDRATES; DAYS LIVING RADIOISOTOPES; EVEN-EVEN NUCLEI; HEAVY NUCLEI; ISOTOPES; LEAD ISOTOPES; MEASURING INSTRUMENTS; NITROGEN COMPOUNDS; NUCLEI; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; POLONIUM ISOTOPES; POLYSACCHARIDES; RADIATION DETECTORS; RADIOISOTOPES; SACCHARIDES; SEPARATION PROCESSES; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
7 figs.; 6 refs.