Preconcentration of selenium and antimony from seawater for determination by graphite furnace atomic absorption spectrometry
Journal Article
·
· Anal. Chem.; (United States)
Concentrations of Se(IV), Sb(III), and Sb(V) from samples of coastal and open-ocean seawater is described using a combination of multielement chelation with ammonium pyrolidine dithiocarbamate and subsequent adsorption on C/sub 18/-bonded silica gel. Eluted analytes are taken up in a matrix-free acidic solution suitable for graphite furnace AAS. Detection limits for Se(IV), Sb(III), and Sb(V) are 7, 50, and 50 ng/L, respectively, based on a 300-mL sample volume. Precision of the determination of Se(IV), Sb(III), and Sb(V) was 14%, 10%, and 10% RSD at concentrations of 0.02, 0.2, and 0.2 ..mu..g/L, respectively. Accuracy of results was assessed by comparison with those obtained by other, independent, analytical techniques. 36 references, 3 tables.
- Research Organization:
- National Research Council of Canada, Ottawa, Ontario
- OSTI ID:
- 6062372
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 57:1; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTROSCOPY
ADSORBENTS
ADSORPTION
ANTIMONY
CHELATING AGENTS
CHEMICAL ANALYSIS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEAWATER
SELENIUM
SEMIMETALS
SILICA GEL
SORPTION
SPECTROSCOPY
WATER
400104* -- Spectral Procedures-- (-1987)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTROSCOPY
ADSORBENTS
ADSORPTION
ANTIMONY
CHELATING AGENTS
CHEMICAL ANALYSIS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEAWATER
SELENIUM
SEMIMETALS
SILICA GEL
SORPTION
SPECTROSCOPY
WATER