An apparatus for precise measurement of absorbance of aqueous solutions at temperatures up to 250 degrees C
- 1 July 1974
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 7 (7) , 522-524
- https://doi.org/10.1088/0022-3735/7/7/010
Abstract
The design and operation are described of an optical cell and supporting apparatus for making precise absorbance measurements of dilute aqueous solutions over the temperature range 25-250 degrees C. Results obtained in studies on the dissociation of salicylic acid and of the o-phenanthrolium cation show that precision of better than +or-1% in absorbance is obtainable over this temperature range.Keywords
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