Química Nova (Jan 2012)

Determinação do teor de cálcio em comprimido à base de lactato de cálcio utilizado no tratamento da osteoporose

  • Sheila P. M. C. de Souza,
  • Francisca E. de Morais,
  • Elisama V. dos Santos,
  • Márcia L. da Silva,
  • Carlos A. Martinez-Huitle,
  • Nedja S. Fernandes

DOI
https://doi.org/10.1590/S0100-40422012000700013
Journal volume & issue
Vol. 35, no. 7
pp. 1355 – 1359

Abstract

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The present study utilized thermogravimetry (TG) and optical emission spectrometry with inductively coupled plasma (ICP/OES) to determine the amount of calcium in calcium lactate tablets used in the treatment of osteoporosis. Thermogravimetry results indicated that the decomposition temperature of CaCO3 occurred at 603.9 and 609.4 ºC in the samples of calcium lactate and tablets, respectively. The calcium content obtained by TG for the tablets sample showed a similar result to that disclosed by ICP-OES, indicating a value of 8.93% for both techniques.

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