Computer Science
Scientific paper
Jan 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988gecoa..52..195c&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 52, Issue 1, pp.195-200
Computer Science
1
Scientific paper
Copper binding properties of several fulvic acid (FA) and whole water samples are compared by means of an empirical model that was calibrated using Suwannee River FA. Within the calibration limits of the model (pH 5.0-8.5, total Cu concentration 0.1-100 M, ionic strength 0.1, and dissolved organic carbon, DOC, 1-10 mg C/1), Cu in solutions of a variety of FA samples are predicted with < 0.2 Cu units root mean square error (RMSE). Within the calibration limits, many whole water sample Cu's are predicted with <0.3 Cu units RMSE if only one-half of the dissolved organic carbon is assumed to bind Cu. Agreement between prediction and experiment at lower ionic strength is not as good. Variations in Cu binding among different sources of dissolved organic matter appear to be much smaller than those due to chemical factors such as pH and ionic strength.
Cabaniss Stephen E.
Shuman Mark S.
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