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
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
- DOE Contract Number:
- DI-14-31-0001-5033
- 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
CADMIUM
ION EXCHANGE CHROMATOGRAPHY
CHROMIUM
COPPER
DESIGN
LEAD
PLATINUM
WATER POLLUTION
MEASURING METHODS
ZINC
ION EXCHANGE MATERIALS
MAGNESIUM OXIDES
NORTH CAROLINA
QUANTITATIVE CHEMICAL ANALYSIS
TRACE AMOUNTS
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
ELEMENTS
MAGNESIUM COMPOUNDS
METALS
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POLLUTION
SEPARATION PROCESSES
SOUTHEAST REGION
TRANSITION ELEMENTS
USA
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
400105 - Separation Procedures