|
D. S. Tsar’kov, A. A. Zhirkov, M. A. Proskurnin
The
effect of electrolytes on the sensitivity of thermal-lens measurements in
aqueous solutions
Abstract
Thermooptical properties of aqueous solutions of strong
electrolytes (H2SO4, HCl, NaCl, Na2SO4, and NaOH) were
investigated, and it was found that the nature of the electrolyte affects the
thermal lens signal. This effect cannot be considered as a sum of effects from
ions comprising the electrolyte in question. The maximum increase in the
sensitivity of thermal-lens measurements is observed in solutions of sulfuric
acid (twofold increase compared to water for the concentration of 0.6M) and
sodium chloride (1.5-fold increase at 2M), while the effect in hydrochloric
acid is negligible.
Copyright (C) Chemistry Dept., Moscow State University, 2002
|
|
