Accession Number : AD0668982

Title :   RHENIUM: ITS CONCENTRATION IN PACIFIC OCEAN SURFACE WATERS,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Scadden,Edith M.

Report Date : 05 FEB 1968

Pagination or Media Count : 34

Abstract : A cyclohexanone extraction procedure was developed to isolate Re from seawater, and the Re concentration was determined by neutron activation analysis. The average Re concentration in four widely-spaced Pacific Ocean surface seawater samples was found to be 0.0084 micrograms/liter plus or minus 17 percent. The amount of Re found in (or on) a brown kelp plant (Macrocystisintegrifolia) was 0.022 micrograms/g freeze-dried plant. The Re in seawater was found to exist as an extractable species, probably the perrhenate ion. The half-life of 186Re was determined to be 89.5 plus or minus 0.2 hr. (Author)

Descriptors :   (*RHENIUM, PACIFIC OCEAN), SEA WATER, NEUTRON ACTIVATION, RADIOACTIVE ISOTOPES, SURFACE PROPERTIES, OCEAN BOTTOM SAMPLING, HALF LIFE, MARINE BIOLOGY, IONS, SALINITY, IODINE, SAMPLERS, COMPUTER PROGRAMS, SEPARATION, NEUTRON COUNTERS, SOLVENT EXTRACTION, RADIOACTIVE DECAY, RADIOACTIVATION ANALYSIS

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE