Prediction and Measurement of the Water Activity of Selected Saturated Salt Solutions at 5°C and 10°C
A theoretical approach, based on the thermodynamic properties of strong electrolyte aqueous solutions, was used to calculate the aw at 5°C and 10°C of selected saturated salt solutions frequently used as standards in the range of microbial growth. The results agreed very well with experimental measu...
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| Autores principales: | , , |
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| Publicado: |
1987
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221147_v52_n4_p1118_POLLIO http://hdl.handle.net/20.500.12110/paper_00221147_v52_n4_p1118_POLLIO |
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| Sumario: | A theoretical approach, based on the thermodynamic properties of strong electrolyte aqueous solutions, was used to calculate the aw at 5°C and 10°C of selected saturated salt solutions frequently used as standards in the range of microbial growth. The results agreed very well with experimental measurements at both temperatures for most salts studied, which included NaBr, NaCl, SrC12, (NH4)2SO4, KCl, BaCl2, and K2SO4. For KNO3 the agreement was somewhat less satisfactory and the reasons are discussed. Copyright © 1987, Wiley Blackwell. All rights reserved |
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