Magnetic recovery of radium, lead and polonium from sea-water samples after preconcentration on a magnetic adsorbent of manganese dioxide coated magnetite
- 1. Marine Chemistry Laboratory, School of Chemistry, The University of Melbourne, Parkville Victoria (Australia)
- 2. CSIRO Division of Chemicals and Polymers, Clayton Victoria (Australia)
Description
Ra, Pb and Po were preconcentrated from sea-water samples by addition of a magnetic adsorbent followed by mixing and collection of the adsorbent using a magnet. The magnetic adsorbent is prepared by coating micron sized magnetite particles with manganese dioxide. When yield tracers133Ba for 226Ra, 208Po for210Po and stable lead for 210Pb) were added to small sea-water samples, recoveries of the tracers were better than 90% with quantitative recovery of the manganese dioxide adsorbent. For large (40 l) samples of ocean water, processed on board ship, recovery of the manganese dioxide adsorbent was 70-100%. Recovery of 133Ba (35%) and stable lead (80%) was adequate for measurement of226Ra and 210Pb in the water. Recovery of 208Po was not satisfactory under the conditions used. The magnetic adsorbent of MnO2 on magnetite is easy to prepare and allows simple and rapid processing of large water samples at sea
Additional details
Publishing Information
- Journal Title
- Analytica Chimica Acta
- Journal Volume
- 328
- Journal Issue
- 1
- Journal Page Range
- p. 53-59.
- ISSN
- 0003-2670
- CODEN
- ACACAM
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 27074027
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S54: ENVIRONMENTAL SCIENCES;
- Descriptors DEI
- ADSORBENTS; BARIUM 133; LEAD 210; MAGNETITE; MANGANESE OXIDES; MATERIALS RECOVERY; POLONIUM 208; POLONIUM 210; RADON 226; SEAWATER
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; BARIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHALCOGENIDES; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HEAVY NUCLEI; HYDROGEN COMPOUNDS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IRON ORES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEAD ISOTOPES; MANAGEMENT; MANGANESE COMPOUNDS; MINERALS; MINUTES LIVING RADIOISOTOPES; NANOSEC LIVING RADIOISOTOPES; NUCLEI; ORES; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; POLONIUM ISOTOPES; RADIOISOTOPES; RADON ISOTOPES; TRANSITION ELEMENT COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WATER; YEARS LIVING RADIOISOTOPES