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Updated: May 1, 2026

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment
Published on: July 22, 2019
Soil pH effect on phosphate induced cadmium precipitation in Arable soil
Chang Oh Hong1, Vance N Owens, Yong Gyun Kim
1Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang, 627-706, South Korea, soilchem@pusan.ac.kr.
Abstract:
The objective of this study was to determine soil pH conditions that allow cadmium (Cd) to precipitate as Cd minerals in phosphate (P) amended soil. Cadmium immobilization could be attributed primarily to Cd adsorption due to increase in pH and negative charge. Soil pH might not affect Cd precipitation as Cd3(PO4)2 by direct reaction of Cd and P in the studied soil, even when soil pH increased up to 9.0. However, Cd might precipitate as CdCO3 with increasing pH up to 9.0 in P untreated soil and up to 8.0 in P treated soil depending on CO2 level.
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