Author： Tőnsuaadu K. Peld M. Bender V.
Publisher： Springer Publishing Company
ISSN： 1388-6150
Source： Journal of Thermal Analysis and Calorimetry, Vol.72, Iss.1, 2003-04, pp. : 363-371
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Abstract
Two types of thermal effects, caused by substitutions (Ca2+↔ Na+, PO 43− ↔ CO 32− , SO 42− , OH−↔ F−) in synthetic precipitated apatites as well as by sorption of Cd2+, Zn2+, and Cr3+ ions from the solutions were studied by TG/DTA, XRD and FTIR analysis. The temperatures of exothermic effect at 330–340°C and of decomposition of carbonate and sulfate apatites at 650–950°C were shown to depend on the substitutions in the apatite structure.
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