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A new dissolution microcalorimeter: calibration and test

Bastos, M; Bai, G; Qvarnström, E and Wadsö, Ingemar LU (2003) In Thermochimica Acta 405(1). p.21-30
Abstract
A new batch microcalorimetric vessel for the determination of enthalpies of dissolution of small amounts of easily or slightly soluble solids was developed at University of Lund, Sweden and was tested at University of Porto, Portugal. The vessel forms part of a series of twin heat conduction microcalorimeters. In a series of consecutive dissolution steps up to four samples, each 0.1-3 mg, can be injected into a solvent chamber of the vessel, volume 20 ml. The high stability of the baseline allows solution experiments to be extended over several hours.All measurements reported were conducted at 298.15 K and with water as the solven

. The calorimeter was calibrated chemically by dissolution of potassium chloride. The performance of... (More)
A new batch microcalorimetric vessel for the determination of enthalpies of dissolution of small amounts of easily or slightly soluble solids was developed at University of Lund, Sweden and was tested at University of Porto, Portugal. The vessel forms part of a series of twin heat conduction microcalorimeters. In a series of consecutive dissolution steps up to four samples, each 0.1-3 mg, can be injected into a solvent chamber of the vessel, volume 20 ml. The high stability of the baseline allows solution experiments to be extended over several hours.All measurements reported were conducted at 298.15 K and with water as the solven

. The calorimeter was calibrated chemically by dissolution of potassium chloride. The performance of the instrument was further tested by measurements of the enthalpies of dissolution of acetanilide and adenine, 18.25 +/- 0.56 and 31.78 +/- 0.64 kJ mol(-1), respectively. No concentration dependence was found. The results are in good agreement with values in the literature. (C) 2003 Elsevier Science B.V. All rights reserved. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
keywords
Chemical calibration, Dissolution microcalorimeter, Adenine, Acetanilide
in
Thermochimica Acta
volume
405
issue
1
pages
21 - 30
publisher
Elsevier
external identifiers
  • wos:000186127000004
  • scopus:0344896809
ISSN
0040-6031
DOI
language
English
LU publication?
yes
id
caf2424a-5b57-491c-982e-7c70710f40aa (old id 121943)
date added to LUP
2007-07-10 17:10:45
date last changed
2018-05-29 11:40:57
@article{caf2424a-5b57-491c-982e-7c70710f40aa,
  abstract     = {A new batch microcalorimetric vessel for the determination of enthalpies of dissolution of small amounts of easily or slightly soluble solids was developed at University of Lund, Sweden and was tested at University of Porto, Portugal. The vessel forms part of a series of twin heat conduction microcalorimeters. In a series of consecutive dissolution steps up to four samples, each 0.1-3 mg, can be injected into a solvent chamber of the vessel, volume 20 ml. The high stability of the baseline allows solution experiments to be extended over several hours.All measurements reported were conducted at 298.15 K and with water as the solven<br/><br>
. The calorimeter was calibrated chemically by dissolution of potassium chloride. The performance of the instrument was further tested by measurements of the enthalpies of dissolution of acetanilide and adenine, 18.25 +/- 0.56 and 31.78 +/- 0.64 kJ mol(-1), respectively. No concentration dependence was found. The results are in good agreement with values in the literature. (C) 2003 Elsevier Science B.V. All rights reserved.},
  author       = {Bastos, M and Bai, G and Qvarnström, E and Wadsö, Ingemar},
  issn         = {0040-6031},
  keyword      = {Chemical calibration,Dissolution microcalorimeter,Adenine,Acetanilide},
  language     = {eng},
  number       = {1},
  pages        = {21--30},
  publisher    = {Elsevier},
  series       = {Thermochimica Acta},
  title        = {A new dissolution microcalorimeter: calibration and test},
  url          = {http://dx.doi.org/},
  volume       = {405},
  year         = {2003},
}