Abstract
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 Ca 2+, Mg 2+, Na +, and H +, and the total amount of these cations released was 0.8 to 1.09 times the amount of Cu sorbed (mol c:mol c). The relationships between Cu activity and pH, and the balance of cations in soils correspond with the surface precipitation of CuCO 3 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(IAP CuCO 3 ) = −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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
