Preconcentration with dithiocarbamate extraction for determination of molybdenum in seawater by neutron activation analysis

Journal Article · Sun Jan 01 00:00:00 EST 1984 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00265a009· OSTI ID:5996827

Mok, W M; Wai, C M

Molybdenum in seawater can be quantitatively extracted with pyrrolidinedithiocarbamate and diethyldithiocarbamate at pH 1.4 into chloroform, for neutron activation analysis. Uranium in seawater cannot be extracted at this pH, and hence eliminates the interference from the /sup 235/U(n,f)/sup 99/Mo reaction. Interferences from matrix species in seawater, such as sodium and bromine, are also removed during the extraction. The proposed method, with good accuracy and sensitivity, is suitable for the determination of molybdenum in natural waters. 10 references, 2 figures.

• Research Organization: Univ. of Idaho, Moscow
• OSTI ID: 5996827
• Journal Information: Anal. Chem.; (United States), Vol. 56
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
MOLYBDENUM
ACTIVATION ANALYSIS
SOLVENT EXTRACTION
ACCURACY
AQUATIC ECOSYSTEMS
BROMINE
CARBAMATES
CHLOROFORM
DEDTC
ECOLOGICAL CONCENTRATION
EXPERIMENTAL DATA
INTERFERING ELEMENTS
MOLYBDENUM 99
ORGANIC SULFUR COMPOUNDS
PH VALUE
PYRROLIDINES
QUANTITATIVE CHEMICAL ANALYSIS
REMOVAL
SEAWATER
SENSITIVITY
SODIUM
TRACE AMOUNTS
URANIUM 235
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METALS
ALPHA DECAY RADIOISOTOPES
AMINES
AZOLES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CHELATING AGENTS
CHEMICAL ANALYSIS
CHLORINATED ALIPHATIC HYDROCARBONS
DATA
DAYS LIVING RADIOISOTOPES
ECOSYSTEMS
ELEMENTS
EVEN-ODD NUCLEI
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
HEAVY NUCLEI
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
METALS
MINUTES LIVING RADIOISOTOPES
MOLYBDENUM ISOTOPES
NONMETALS
NUCLEI
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PYRROLES
RADIOISOTOPES
SEPARATION PROCESSES
TRANSITION ELEMENTS
URANIUM ISOTOPES
WATER
YEARS LIVING RADIOISOTOPES
400101* - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
400105 - Separation Procedures