Abstract
This paper introduces a new measuring method in Isothermal Titration Calorimetry (ITC). This method, based on a proportional-integral control system, offers many important advantages when compared to the frequently used proportional control: higher signal-to-noise ratio, improved stability of baseline, increased static and dynamic sensitivity, similar or smaller time constants and calibration constant independent of the control parameters.
Here an experimental proof of this method is detailed and full theoretical foundation will be discussed in a next paper.
Similar content being viewed by others
References
J. L. Macqueron, J. Ortín, G. Thomas and V. Torra, Thermochim. Acta, 67 (1983) 213
J. Ortin, A. Ramos, V. Torra, J. Vińals, E. Margas and W. Zielcnkiewicz, Thermochim. Acta, 76 (1984) 325.
J. Hatt, E. Margas and W. Zielenkiewicz, Thermochim. Acta, 64 (1983) 305.
S. Tanaka, Thermochim. Acta, 25 (1978) 269.
S. Tanaka, Thermochim. Acta, 156 (1989) 117.
C. Rey, J.R. Rodríguez and V. Pérez-Villar, Thermochim. Acta, 61 (1983) 1.
E. Cesari, V. Torra, J. L. Macqueron, R. Prost, J. P. Dubes and H. Tachoire, Thermochum. Acta, 53 (1982) 1.
E. Cesari, V. Torra, J. L. Macqueron, R. Prost, J. P. Dubes and H. Tachoire, Thermochim. Acta, 53 (1982) 17.
J. Ortin, V. Torra, J. Vińals and E. Cesari, Thermochim. Acta, 70 (1983) 113.
E. Cesari, J. Ortín, P. Pascual, V. Torra, J. Vińals, J. L. Macqueron, J. P. Dubes and H. Tachoire, Thermochim. Acta, 48 (1981) 367.
G. W. H. Höhne, Thermochim. Acta, 22 (1978) 347.
J. R. Rodriguez, C. Rey, V. Pérez-Villar, V. Torra, J. Ortin and J. Vińals, Thermochim. Acta, 63 (1986) 331.
E. Margas and W. Zielenkiewicz, Thermochim. Acta, 215 (1993) 9.
B.C. Kuo, Digital Control Systems, 2nd De., Saunders College Publishing, U.S.A. (1992).
S. L. Randzio, Thermochim. Acta, 44 (1981) 1.
R. Ambrosetti, N. Ceccanti and C. Festa, J. Phys. E: Sci. Instrum., 16 (1983) 265.
O. López-Mayorga, P. L. Matco, J. Mira and M. Cortijo, J. Phys. E. Sci. Instrum., 17 (1984) 1231.
E. Freire, O. López-Mayorga and M. Straume, Anal. Chem., 62 (1990) 950A.
M. El-Harrous, S. J. Gill and A. Parody-Morreale, Meas. Sci. Technol., 5 (1994) 1065.
M. L. McGlashan, Thermochim. Acta, 72 (1984) 55.
I. Wadsö, Thermochim. Acta, 169 (1990) 151.
L. D. Hansen and D. J. Eatough, Thermochim. Acta, 70 (1983) 257.
H. Huemer, E. Platzer and K. Rehak, Thermochim. Acta, 231 (1994) 21.
I. Wadsö, Thermochim. Acta, 96 (1985) 313.
T. Wiseman, S. Williston, J. F. Brandts and L. Lin, Anal. Biochem., 179 (1989) 131.
J. Reuquerol, Thermochim. Acta, 96 (1985) 377.
J. Barthel, Thermometric Titrations, Ed. John Wiley & Sons, USA (1975).
J. R. Leigh, Applied Digital Control: Theory, Design and Implementation, 2nd Ed., Prentice Hall International, UK (1992).
A. Velázquez-Campoy, O. López-Mayorga and M. A. Cabrerizo-Vílchez, to be published.
K. R. Löblich, Thermochim. Acta, 231 (1994) 7.
J. P. Dubes, R. Kechavarz and H. Tachuire, Termochim. Acta, 79 (1984) 15.
O. López-Mayorga, P. L. Mateo and M. Cortijo, J. Phys. E: Sci. Instrum., 20 (1987) 265.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Velázquez-Campoy, A., López-Mayorga, O. & Cabrerizo-Vílchez, M.A. New Measuring Method in Isothermal Titration Calorimetry Based on a Proportional-Integral Controlled System. Journal of Thermal Analysis and Calorimetry 52, 881–894 (1998). https://doi.org/10.1023/A:1010195432522
Issue Date:
DOI: https://doi.org/10.1023/A:1010195432522