In this paper, we develop a method to determine refractive index changes and its dispersion of diluted solutions by analyzing the refraction of light by a hollow prism containing the medium to be characterized. The system uses a double prism scheme to compensate the dispersion of the medium and the output beam is analyzed with a spectrophotometer resulting in a fast measurement with a simple setup. The system was calibrated using solutions of sucrose in water. We present experimental results of the dispersion of the specific refractive index increment {dni dC) of sucrose. Finally we discuss the limitations of the method to the characterization of absorbing media. PACS:78.20/78.20.Ci/07.60.Hv/42.25.Fx
In this paper, we propose a method to determine refractive index changes and its dispersion of diluted solutions by analyzing the refraction of light by a hollow prism containing the medium to be characterized. The system uses a double prism refractometer to compensate the dispersion of the medium and the output beam is analyzed with a spectrophotometer resulting in a faster measurement with a simple setup. The system was calibrated using solutions of sucrose in water. We present experimental results of the characterization and monitoring of water oxidation as an example of potential applications.
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