Determination of arsenic, molybdenum, uranium and vanadium in seawater by neutron activation analysis after preconcentration by colloid flotation
Journal Article
·
· Anal. Chem.; (United States)
Colloid flotation of arsenic, molybdenum, uranium, and vanadium on hydrous iron(III) oxide permits rapid collection of the precipitate for neutron activation analysis. The precipitate is floated, in the presence of sodium dodecyl sulfate and tiny nitrogen bubbles, from 1 L of seawater at pH 5.7 +/- 0.2. Except for uranium, recoveries are better than 95%; about 75% of the uranium was recovered. Selenium(IV) and tungsten(VI) can be similarly collected but their natural concentration levels in seawater are below detection limits for 1 L volumes.
- Research Organization:
- Dalhousie Univ., Halifax, Nova Scotia
- OSTI ID:
- 7139687
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 55:4; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101* -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
ACTINIDES
ACTIVATION ANALYSIS
ARSENIC
BARYON REACTIONS
CHALCOGENIDES
CHEMICAL ANALYSIS
COLLOIDS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
FLOTATION
HADRON REACTIONS
HYDROGEN COMPOUNDS
INFORMATION
IRON COMPOUNDS
IRON OXIDES
METALS
MOLYBDENUM
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SEAWATER
SEMIMETALS
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
URANIUM
VANADIUM
WATER
400101* -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
ACTINIDES
ACTIVATION ANALYSIS
ARSENIC
BARYON REACTIONS
CHALCOGENIDES
CHEMICAL ANALYSIS
COLLOIDS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
FLOTATION
HADRON REACTIONS
HYDROGEN COMPOUNDS
INFORMATION
IRON COMPOUNDS
IRON OXIDES
METALS
MOLYBDENUM
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SEAWATER
SEMIMETALS
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
URANIUM
VANADIUM
WATER