Measurement of Aqueous Solution Temperatures in Infrared Spectroscopy
There appears to be no widely used method of measuring the temperatures of liquid samples in it spectroscopy, although Potts1 has suggested the use of a resistance thermometer. Other authors2 have used thermocouples, but common types of thermocouples will not fit into the sample spaces of it liquid cells so that a nagging doubt remains about the actual temperature of the sample in the beam. In this investigation, temperatures inside the cell were determined with an accuracy of ±0.1°C by means of a thermocouple made from two 0.0025 cm diam Platinel3 wires spot welded together.
KeywordsLiquid Sample Sample Space Entrance Hole Liquid Cell Thermocouple Wire
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- 1.W. J. Potts Jr., Chemical Infrared Spectroscopy (Wiley, New York 1963 ), Vol. I, p. 248.Google Scholar
- 2.M. S. Smith and P. A. D. de Maine, Can. J. Chem. 41, 812 (1963), and references cited.Google Scholar
- 3.D. J. Ascino and J. F. Schneider (Engelhard Industries Inc.), paper presented at the Fourth Symposium on Temperature, Columbus, Ohio, March 1961.Google Scholar