Copper activity in soil solutions of calcareous soils
- 1. Center for the Study of Metals in the Environment, Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716 (United States) and Institute for Physico-Chemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290 (Russian Federation)
- 2. Center for the Study of Metals in the Environment, Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716 (United States)
Description
Copper partitioning was studied in seven calcareous soils at moisture content corresponding to 1.2 times the field moisture content (soil water potential 7.84 J kg-1). Copper retention was accompanied by the release in soil solution of Ca2+, Mg2+, Na+, and H+, and the total amount of these cations released was 0.8 to 1.09 times the amount of Cu sorbed (molc:molc). The relationships between Cu activity and pH, and the balance of cations in soils correspond with the surface precipitation of CuCO3 as the main mechanism of Cu retention. The values of ion activity product of surface precipitate were close for all studied soils with the average log(IAPCuCO3) = -15.51. The relationship between copper activity in soil solutions and soil properties is well fit by a regression relating pCu (-log copper ion activity) with soil ph, total Cu, and carbonate content. - Copper activity in contaminated calcareous soils is controlled by surface precipitated CuCO3 with log ion activity product of -15.51
Additional details
Identifiers
- DOI
- 10.1016/j.envpol.2006.04.010;
- PII
- S0269-7491(06)00282-X;
Publishing Information
- Journal Title
- Environmental Pollution (1987)
- Journal Volume
- 145
- Journal Issue
- 1
- Journal Page Range
- p. 1-6
- ISSN
- 0269-7491
- CODEN
- ENPOEK
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38025495
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Descriptors DEI
- CALCIUM IONS; COPPER; COPPER CARBONATES; COPPER IONS; MAGNESIUM IONS; MOISTURE; PH VALUE; PRECIPITATION; RETENTION; SODIUM IONS; SOILS; SOLUTIONS
- Descriptors DEC
- CARBON COMPOUNDS; CARBONATES; CHARGED PARTICLES; COPPER COMPOUNDS; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; IONS; METALS; MIXTURES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.