View More View Less
  • 1 Pharmaceutical Sciences Department, Federal University of Pernambuco, Artur de Sá Avenue, University City, Recife, PE, 50740-521, Brazil
  • | 2 Unified Laboratories of Pharmaceutical Development and Assays, Pharmaceutical Sciences Department, Federal University of Paraíba, UFPB, DCF/CCS – Campus I, João Pessoa, PB, 58059-970, Brazil
  • | 3 Pharmaceutical Department, Estadual University of Paraíba, UEPB, Campina Grande, PB, Brazil
Restricted access

Abstract

Water is a fundamental element of life. Its multiple uses are indispensable for a wide spectrum of human activities. This study aims to characterize water from different salinities obtained in the Cariri region of Paraíba, Brazil. The samples were analyzed using the DSC-coupled to the Peltier system (DSC-Cooling) and physical–chemical water tests performed employing reactive kits, using the Spectroquant Merck® specific for each test. The calorimetric curves showed crystallization phase transitions with different characteristics in peak format and crystallization temperatures between the samples of different salinities. The calorimetric data obtained in the process of crystallization of water is directly correlated to the physico-chemical parameters of conductivity and total dissolved solids, showing that the analytical technology DSC-cooling/heating is suitable for characterization of different salinities water.

  • 1. Merck index, 12º Edição, 1996.

  • 2. Hilllgren, A. Investigation of the freeze-thawing process for pharmaceutical formulations of a model protein. Uppsala: University of Pharmacy; 2002.

    • Search Google Scholar
    • Export Citation
  • 3. Moura, EA, Correia, LP, Pinto, MF, Procopio, JVV, de Souza, FS, Macedo, RO. Thermal characterization of the solid state and raw material fluconazole by thermal analysis and pyrolysis coupled to GC/EM. J Therm Anal Calorim. 2010;100:289293. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 4. da Silva, RMF, de Medeiros, FPM, Nascimento, TG, Macedo, RO, Neto, PJR. Thermal characterization of indinavir sulfate using TG, DSC, and DSC-photovisual. J Therm Anal Calorim. 2009;95: 3 14. Portaria MS nº. 518/2004.

    • Search Google Scholar
    • Export Citation
  • 5. Devireddy, RV, Raha, D, Bischof, JC. Measurement of water transport during freezing in cell suspensions using a differential scanning calorimeter. Cryobiology. 1998;36: Issue 2 124155. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6. Mazzobre, MF, Soto, G, Aguilera, JM, Buera, MP. Crystallization kinetics of lactose in systems co-lyofilized with trehalose. Analysis by differential scanning calorimeter. Food Res Int. 2001;39:903911. .

    • Crossref
    • Search Google Scholar
    • Export Citation

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jan 2021 0 0 0
Feb 2021 0 0 0
Mar 2021 0 0 0
Apr 2021 0 0 0
May 2021 0 0 0
Jun 2021 0 0 0
Jul 2021 0 0 0