Radiochemical separation of fission products from large volumes of sea water. Strontium, cesium, cerium, and promethium
Chemical methods were used to isolate 28-year strontium-90, 30-year cesium-137, 280-day cerium144, and 2.4-year prometiuum-147 from as much as 200 liters of sea water. Strontium separation involves precipitation of mixed strontium-calcium carbonates directly and in the presence of (ethylenedinitrilo)tetraacetate ion, precipitation of strontium nitrate, scavenging with ferric hydroxide-barium chromate, and conversion to strontium carbonate. Strontium-90 activity is measured by separating and counting the daughter yttrium-90 activity. Cesium is coprecipitated with dipotassium sodium cobaitinitrite, separated as cesium silicotungstate, converted to the perchlorate, and freed of trace potassium and rubidium by ion exchange. Rare earths are removed by initial coprecipitation on ferric hydroxide. Uranium,protactinium, and thorium are removed by ion exchange; radium and lead are scavenged with barium sulfate. The cerium fraction is obtained in pure form by separation as cerium(IV); promethium, by cation exchange.
- Research Organization:
- Clark Univ., Worcester, Mass.; Woods Hole Oceanographic Institution, Mass.
- NSA Number:
- NSA-13-004531
- OSTI ID:
- 4282977
- Journal Information:
- Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 31; ISSN ANCHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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ANALYTICAL METHODS FOR THE DETERMINATION OF CAESIUM-137, STRONTIUM-89 AND - 90 IN MILK, VEGETATION, ORGANIC ION EXCHANGE RESINS, SEAWEED AND FISH FLESH, AND STRONTIUM-89 AND -90 IN BONE
THE DETERMINATION OF RADIOSTRONTIUM
Related Subjects
BARIUM COMPOUNDS
BARIUM SULFATES
CALCIUM CARBONATES
CERIUM 144
CERIUM COMPOUNDS
CESIUM 137
CESIUM COMPOUNDS
CHEMICAL REACTIONS
CHROMIUM OXIDES
COBALT COMPOUNDS
COUNTERS
DECAY
EDTA
FISSION PRODUCTS
HALF-LIFE
IMPURITIES
ION EXCHANGE
IRON HYDROXIDES
LEAD COMPOUNDS
MEASURED VALUES
MINERAL ACIDS
MIXING
NITROUS ACID
PERCHLORIC ACID
POTASSIUM COMPOUNDS
PRECIPITATION
PROMETHIUM 147
PROMETHIUM COMPOUNDS
PROTACTINIUM COMPOUNDS
RADIOACTIVITY
RADIOCHEMISTRY
RADIUM COMPOUNDS
RARE EARTHS
RUBIDIUM COMPOUNDS
SEA
SEPARATION PROCESSES
SILICATES
SILICON OXIDES
SODIUM COMPOUNDS
STRONTIUM
STRONTIUM 90
STRONTIUM CARBONATES