Journal
GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
Volume 19, Issue 2, Pages 184-192Publisher
GEOLOGICAL SOC PUBL HOUSE
DOI: 10.1144/geochem2017-086
Keywords
zinc; Haplic Chernozem; easily and poorly soluble compounds; long-term incubation experiment; transformation
Categories
Funding
- Ministry of Education and Science of Russia [5.948.2017/PP]
- Russian Foundation for Basic Research [16-04-00924_a, 15-54-15015 NTsNI_a]
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Stabilization mechanisms of easily and poorly soluble Zn compounds in Haplic Chernozem are considered in a long-term incubation experiment, including the dissolution and hydrolysis of the Zn added compounds (acetate, nitrate, sulphate, chloride, phosphate, and oxide) at a rate of 300 and 2000 mg kg (1) and the following post-sorption metal transformation. The indicators of stabilization were changes in the content of Zn weakly bound compounds (WBCs) and soil pH. Stabilization of Zn acetate, nitrate, sulphate, chloride progressed during incubation for 5 years which resulted in a decrease of Zn WBCs and an increase in soil pH. In the soil contaminated with Zn phosphate and oxide, the content of Zn WBCs increased and the soil pH decreased with time.
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