Absorption spectroscopy in the ultaviolet and visible spectral range of hexavalent chromium aqueous solutions

摘要

The possibility of performing direct absorption spectroscopy of Hexavalent Chromium aqueous solutions is demonstrated, in view of using optical fiber technology. In order to check which are the suitable spectral ranges and detection limits, and, consequently, the optoelectronic components and optical fiber probe to be adopted, preliminary absorption measurements were performed by means of a conventional dual-beam spectrophotometer equipped with 10 mm and 100 mm path length cuvettes.