Accession Number : AD0690095

Title :   IN SITU OCEANIC Cs-137 SAMPLING TECHNIQUE,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Shirasawa,Takeo H.

Report Date : 05 JAN 1969

Pagination or Media Count : 32

Abstract : The use of inorganic ion exchangers, which are selective for cesium, and their application in ocean sampling have been adapted into an in situ pump/adsorber sampling technique. The new sampling system, which is capable of processing very large volumes of seawater to a maximum depth of 2000 meters, is described. The system was tested and evaluated during two ocean cruises, and the improvement in resolution possible by this ion-exchange method for Cs-137 determinations was demonstrated. The system will yield resolution of the order of 0.002 dpm/liters in Cs-137 concentration determinations for effective volumes sampled of 1000 liters. A range of Cs-137 concentration determinations from as low as 0.007 dpm/liters to a surface concentration value of 1.9 dpm/liters is cited. An evaluation of two inorganic ion exchangers, potassium hexacyanocobalt ferrate (KCFC) and ammonium hexacyanocobalt ferrate (NCFC), both of which were used in the pump/adsorber system, is presented. (Author)

Descriptors :   (*SEA WATER, RADIOACTIVE ISOTOPES), (*CESIUM, SEA WATER), ION EXCHANGE, MICROANALYSIS, PUMPS, SAMPLERS, GAMMA RAY SPECTROSCOPY, FALLOUT, RADIOCHEMISTRY, POTASSIUM COMPOUNDS, FERRATES, COBALT COMPOUNDS, REMOVAL, AMMONIUM COMPOUNDS

Subject Categories : Physical and Dynamic Oceanography
      Radioactiv, Radioactive Wastes & Fission Prod

Distribution Statement : APPROVED FOR PUBLIC RELEASE