Published May 1977 | Version v1
Journal article Metadata-only

The determination of molybdenum and tungsten in sea and surface water

Creators

  • 1. Stichting Energieonderzoek Centrum Nederland, Petten

Description

A simple method for the determination of molybdenum and tungsten in sea and surface water is presented. Molybdenum and tungsten are concentrated on activated charcoal by adsorption as the ammonium pyrrolidine dithiocarbamate complex; the optimal pH for adsorption is 1.3. Mo and W are then determined by thermal neutron activation, forming 99Mo (Tsub(1/2)=66.7 h) and 187W (Tsub(1/2)=23.8 h), respectively. The sup(99m)Tc daughter of 99Mo is measured as soon as the equilibrium between sup(99m)Tc (Tsub(1/2)=6 h) and 99Mo is established. The detection limits are 0.05 μg Mo/l and 0.05 μg W/l (or 0.001 μg W/l after a simple chemical separation)

Additional details

Identifiers

DOI
10.1016/s0003-2670(01)82310-2;

Publishing Information

Journal Title
Analytica Chimica Acta
Journal Volume
90
Journal Issue
1
Series
Anal. Chim. Acta.
Journal Page Range
193-200
ISSN
0003-2670

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
8327541
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACTIVATED CARBON; ACTIVATION ANALYSIS; MOLYBDENUM; MOLYBDENUM 99; QUANTITATIVE CHEMICAL ANALYSIS; SEAWATER; SENSITIVITY; SURFACE WATERS; THERMAL NEUTRONS; TUNGSTEN; TUNGSTEN 187
Descriptors DEC
ADSORBENTS; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON; CHEMICAL ANALYSIS; DAYS LIVING RADIOISOTOPES; ELEMENTARY PARTICLES; ELEMENTS; EVEN-ODD NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; HYDROGEN COMPOUNDS; INTERMEDIATE MASS NUCLEI; ISOTOPES; METALS; MOLYBDENUM ISOTOPES; NEUTRONS; NONMETALS; NUCLEI; NUCLEONS; OXYGEN COMPOUNDS; RADIOISOTOPES; TRANSITION ELEMENTS; TUNGSTEN ISOTOPES; WATER

Optional Information

Notes
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