AND BIOPHYSICAL CHEMISTRY DIVISION
COMMISSION ON THERMODYNAMICS
Standards in isothermal microcalorimetry (IUPAC Technical Report)
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,
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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