Agriculture Reference
In-Depth Information
1.25
b vs PH
Pb
Zn
Ni
Cu
Cd
Selim and
Am acher
1.00
0.75
b
0.50
0.25
0.00
2
4
6
8
10
pH
FIGURE 1.23
Measured and calculated Freundlich b parameter values for all heavy metals and soils.
Calculated values for b were obtained using Buchter et al. (1989).
References
Bradl, H. B. 2004. Adsorption of Heavy Metal Ions on Soils and Soil Constituents. J.
Colloid Interface Sci. 277: 1-18.
Buchter, B., B. Davidoff, M. C. Amacher, C. Hinz, I. K. Iskandar, and H. M. Selim.
1989. Correlation of Freundlich K d and n Retention Parameters with Soils and
Elements. Soil Sci. 148: 370-379.
Environmental Protection Agency. 1999. Understanding Variation in Partition
Coefficient, Kd, Values. Volume I: The Kd Model, Methods of Measurement,
and Application of Chemical Reaction Codes. EPA 402-r-99-004a (212p).
Fontes, M. 2012. Behavior of Heavy Metals in Soils: Individual and Multiple
Competitive Adsorption. In Competitive Sorption and Transport of Trace Elements
in Soils and Geological Media , edited by H. M. Selim, 77-117. Boca Raton, FL: CRC
Press.
Fuller, C. C., J. A. Davis, and G. A. Waychunas. 1993. Surface Chemistry of
Ferrihydrite: Part 2. Kinetics of Arsenate Adsorption and Coprecipitation.
Geochim. Cosmochim. Acta 57: 2271-2282.
Giles, C. H., A. P. D'Silva, and I. A. J. Easton. 1974.  A General Classification of the
Solute Adsorption Isotherms II. J. Colloid Interface Sci. 47: 766-778.
Goldberg, S. 1992. Use of Surface Complexation Models in Soil Chemical Systems.
Adv. Agron. 47: 233-329.
Hinz, C., 2001. Description of Sorption Data with Isotherm Equations. Geoderma 99:
225-243.
Hinz, C., L. A. Gaston, and H. M. Selim. 1994. Effect of Sorption Isotherm Type on
Predictions of Solute Mobility in Soil. Water Resour. Res. 30: 3013-3021.
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