Published June 1981
| public
Journal Article
Characterization of soluble and colloidal phase metal complexes in river water by ultrafiltration. A mass-balance approach
Abstract
Ultrafiltration, anodic stripping voltammetry, and atomic absorption spectrophotometry have been used to determine the distribution and degree of association of major trace metals with discrete size fractions of dissolved organic matter which passes initially through a 0.4-pm membrane filter. A novel mass-balance approach has been developed for fractionation of operationally defined, dissolved organic matter and organometallic complexes into well-defined molecularsize ranges. The highest concentrations of trace metals were found in intermediate molecular weight fractions ( 10^3-10^4) with no detectable free or labile metal as determined by anodic stripping voltammetry.
Additional Information
© 1981 American Chemical Society. Received for review December 20,1979. Accepted February 2,1981. Publication Date: June 1981. This research was supported by a grant from the National Science Foundation (ENV77-04496 )to M.R.H., S.J.E.,and W.J.M. We are grateful to many colleagues who were helpful during this study. Special thanks go to Drs. W. Combs, N. Carriker, and H. Allen for stimulating discussions and assistance.Additional details
- Eprint ID
- 59794
- DOI
- 10.1021/es00088a002
- Resolver ID
- CaltechAUTHORS:20150820-144458609
- ENV77-04496
- NSF
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2015-08-21Created from EPrint's datestamp field
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2021-11-10Created from EPrint's last_modified field