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Pure Appl. Chem., 2001, Vol. 73, No. 10, pp. 1625-1639

http://dx.doi.org/10.1351/pac200173101625

PHYSICAL AND BIOPHYSICAL CHEMISTRY DIVISION
COMMISSION ON THERMODYNAMICS

Standards in isothermal microcalorimetry (IUPAC Technical Report)

Ingemar Wadsö1 and Robert N. Goldberg2

1 Physical Chemistry 1, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden
2 Biotechnology 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.