Optical Multichannel Analyser Based Large Volume Reflectometer

摘要

A Large Volume Reflectometer (LVR) for the measurement of reflection propertiesof surface water is presented. The instrument and its function are described. A protocol for measurements using the collimated illumination is described. With this setup reflection spectra of demi water filtered over 0.45 microns pore size filters and untreated tap water were measured. Comparisons are made between absorption spectra derived from the LVR measurements and absorption spectra measured with a spectrophotometer for different concentrations of aquatic humus (yellow substance) and a clear, orange solution of the dye ecoline 236.