Development of a column chromatography method for field pre-concentration of trace metals with application to the Haw-Cape Fear Riverss, N. C. Master's thesis
Technical Report
·
OSTI ID:7214534
Column chromatography was investigated for adaptation as a field technique for concentrating dissolved trace metals from natural waters. Manganese oxide impregnated acrylic fibers, a chelating resin (Chelex 100), a cation exchange resin (AG-50W) and an anion exchange resin (AG-1) were employed in preliminary work. Ion exchange resins were the most satisfactory and the final design for field use consisted of a cation and an anion exchange column in series. Natural water spiked with CR51 as a tracer indicated that soluble Cr(III) and Cr(VI) could be separated by the technique. A portable field unit was constructed and used to carry out a one year survey of Cd, Cr, Cu, Pb, and Zn in the Haw-Cape Fear Rivers of North Carolina. Elevated concentrations of Cr, Cu, and Cd were observed in the upper industrialized areas while Zn and Pb appeared to have sources throughout the basin. Concentration ranges in ug/l were <0.10-1.22 Cd, <0.1-26.8 Cr, 0.9-9.1 Cu, 1.1-74.0 Pb and 2.9-74.0 Zn.
- Research Organization:
- North Carolina Univ., Chapel Hill (USA). Dept. of Environmental Sciences and Engineering
- OSTI ID:
- 7214534
- Report Number(s):
- PB-267878
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALINE EARTH METAL COMPOUNDS
CADMIUM
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
CHROMIUM
COPPER
DESIGN
ELEMENTS
ION EXCHANGE CHROMATOGRAPHY
ION EXCHANGE MATERIALS
LEAD
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEASURING METHODS
METALS
NORTH AMERICA
NORTH CAROLINA
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOUTHEAST REGION
TRACE AMOUNTS
TRANSITION ELEMENTS
USA
WATER POLLUTION
ZINC
400105 -- Separation Procedures
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALINE EARTH METAL COMPOUNDS
CADMIUM
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
CHROMIUM
COPPER
DESIGN
ELEMENTS
ION EXCHANGE CHROMATOGRAPHY
ION EXCHANGE MATERIALS
LEAD
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEASURING METHODS
METALS
NORTH AMERICA
NORTH CAROLINA
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOUTHEAST REGION
TRACE AMOUNTS
TRANSITION ELEMENTS
USA
WATER POLLUTION
ZINC