Eclética Química (Apr 2018)

Caracterização de cálculos renais por análise térmica

  • C. H. D. Branco,
  • A. L. Silva,
  • Jose Marques Luiz,
  • Lucildes Pita Mercuri,
  • Jivaldo do Rosário Matos

DOI
https://doi.org/10.26850/1678-4618eqj.v34.1.2009.p51-56
Journal volume & issue
Vol. 34, no. 1
pp. 51 – 56

Abstract

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Ten samples of kidney stone had been studied through elemental analysis of CHN (EA), Infrared Absorption Spectroscopy and X-Ray Powder Diffraction (XRD). The thermal behavior of the samples is studied by Thermogravimetry/Derivative Thermogravimetry (TG/DTG) and Differential Scanning Calorimetry (DSC). The results of AE, IV absorption Spectroscopy and XRD showed the presence of struvite (NH4Mg [PO4].6H2O), apatite, monohydrated calcium oxalate and dihydrated calcium oxalate. The TG and DSC curves allowed to classify the samples in two different groups: Group I show typical thermal behavior of struvite and Group II present a profile thermal analytical characteristic of a mixture of calcium oxalate.