Use of thermal analysis in the study of soil Pb immobilization

作者：Waclawska Irena^*; Szumera Magdalena

来源：Journal of Thermal Analysis and Calorimetry, 2010, 99(3): 873-877.

DOI：10.1007/s10973-009-0558-6

• Soil environment protection
• Pb immobilization
• Thermal analysis (TG/DTG/DTA)
• Thermal decomposition

Immobilization of lead contamination in soils by precipitation of non-assimilable for plants Pb-phosphate was considered. Glassy fertilizer of controlled release rate of the nutrients for plants as a source of phosphate anions was applied. Thermal analysis methods (TG/DTG/DTA) were used for the identification of components of Pb-precipitate, which being in statu nascendi have nonstoichiometric composition and disordered crystallographic structure difficult to identify by XRD method. Application of TA methods permits to demonstrate the negative role of Pb complexing citric acid solution simulating the natural soil conditions, which inhibits the Pb-phosphate of pyromorphite type formation.

• 出版日期2010-3