Published July 1980 | Version v1
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A radiochemical procedure for the determination of Po-210 in environmental samples

Creators

Description

A radiochemical procedure for the determination of Po-210 in environmental samples was developed. Soil, sediments, filter materials, plants, water and food samples can be analyzed for Po-210. Wet ashing is achieved with HNO3 + H2O2 or HCl + HNO3. To separate disturbing substances, a coprecipitation with Te is used for sample materials containing silica. Po-210 deposition from HCl solution on Ag platelets with other sample materials is possible directly. Deposited Po-210 is counted by α-spectrometry. For chemical yield determination Po-208 is added, yields range between 60% and 100%. A lower detection limit of about 0,002 pCi Po-210/sample is achievable. (orig./HP)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Eine radiochemische Methode zur Bestimmung von Po-210 in Umweltproben wurde entwickelt. Erde, Sedimente, Filter, Pflanzen, Wasser und Nahrungsmittel koennen auf Po-210 analysiert werden. Zur Nassveraschung wird HNO3 + H2O2 oder HCl + HNO3 verwendet, zur Abtrennung von stoerenden Bestandteilen bei SiO2-haltigen Proben eine Te-Mitfaellung verwendet. Aus allen anderen Proben wird Po-210 direkt aus HCl auf Ag-Plaettchen abgeschieden. Die Messung erfolgt durch α-Spektrometrie, die Bestimmung der chemischen Ausbeute durch zugesetztes Po-208 mit Ausbeuten zwischen 60% und 100%. Die Nachweisgrenze betraegt ca. 0,002 pCi Po-210/Probe. (orig./HP)

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Additional details

Additional titles

Original title (German)
Eine radiochemische Methode zur Bestimmung von Po-210 in Umweltmaterialien

Publishing Information

Imprint Pagination
18 p.
Report number
KFK--2987

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
11557793
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S61: RADIATION PROTECTION AND DOSIMETRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AIR; ALPHA SPECTROSCOPY; ENVIRONMENT; FOOD; NATURAL RADIOACTIVITY; PLANTS; POLONIUM 210; QUANTITATIVE CHEMICAL ANALYSIS; RADIOCHEMISTRY; SAMPLE PREPARATION; SEDIMENTS; SENSITIVITY; SOILS; SURFACE WATERS; WET ASHING
Descriptors DEC
ALPHA DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; CHEMISTRY; DAYS LIVING RADIOISOTOPES; EVEN-EVEN NUCLEI; FLUIDS; GASES; HEAVY NUCLEI; ISOTOPES; NUCLEI; POLONIUM ISOTOPES; RADIOACTIVITY; RADIOISOTOPES; SPECTROSCOPY