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Metal Transport Phases in the Upper Mississippi River

Eisenreich, S. J. and Hoffmann, M. R. and Rastetter, D. and Yost, E. and Maier, W. J. (1980) Metal Transport Phases in the Upper Mississippi River. In: Particulates in Water. Advances in Chemistry. No.189. American Chemical Society , Washington, DC, pp. 135-176. ISBN 9780841204997.

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Six metals of geochemical and water quality interest in the upper Mississippi River were partitioned into soluble, adsorbed, solid organic, oxide coating, and crystalline phases, applying a chemical fractionation scheme to particulates and ultrafiltration to the dissolved (<0.4 µm) phase. Crystalline and oxide fractions were dominant transport phases for aluminum and iron, while solution and solid organic fractions were dominant for manganese, copper, cadmium, and lead. The fraction of metal transported in available phases (noncrystalline) ranged from 10 to 25% for aluminum and from 30 to 70% for iron, while the amount of manganese, copper, cadmium, and lead generally exceeded 90%. Ultrafiltration studies showed that the highest concentrations of copper, cadmium, and lead occurred in the 1-10K mol wt fraction and correlated with organic carbon. The magnitude of residual copper complexation capacities (~ 1.0 µM) and conditional stability constants (~ 10^(10)) suggests that natural organic ligands are likely multidentate, containing nitrogen and sulfur functional groups.

Item Type:Book Section
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Hoffmann, M. R.0000-0001-6495-1946
Additional Information:© 1980 American Chemical Society. Received November 13, 1978. This work was supported by a National Science Foundation Grant (ENV 77-04496) awarded to W. J. Maier, M. R. Hoffmann, and S. J. Eisenreich.
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NSFENV 77-04496
Series Name:Advances in Chemistry
Issue or Number:189
Record Number:CaltechAUTHORS:20150828-082057376
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Official Citation:Metal Transport Phases in the Upper Mississippi River S. J. EISENREICH, M. R. HOFFMANN, D. RASTETTER, E. YOST, and W. J. MAIER Particulates in Water. November 1, 1980, 135-176 DOI:10.1021/ba-1980-0189.ch006
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59938
Deposited By: Ruth Sustaita
Deposited On:11 Sep 2015 20:02
Last Modified:10 Nov 2021 22:27

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