PHYSICAL
AND BIOPHYSICAL CHEMISTRY DIVISION
COMMISSION ON THERMODYNAMICS
Standards in isothermal microcalorimetry (IUPAC Technical Report)
Ingemar Wadso1,
and Robert N. Goldberg2
1Physical Chemistry 1, Chemical Center, University
of Lund, P.O. Box 124, S-221 00 Lund, Sweden; 2Biotechnology Division,
National Institute of Standards and Technology, Gaithersburg, MD 20899,
USA
Abstract: The main calorimetric principles used in isothermal
microcalorimetry are briefly discussed. Different chemical calibration
and test reactions are discussed, with a focus on reactions suitable
for ambient conditions: reactions initiated by mixing of liquids (including
titration microcalorimetry), dissolution of solid compounds and of slightly
soluble gases, a photochemical process, and thermal power signals released
over an extended period of time. Guidelines on the use of standardized
chemical test and calibration reactions in isothermal microcalorimetry
are presented. A standardized terminology in reporting characteristics
of isothermal microcalorimeters is proposed.
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