PNNL

Abstract

On-line spectroscopic monitoring significantly improves the safety and efficiency of chemical processes involving radioactive or high corrosive materials. The simplistic setup and non-destructive data collection provided by spectroscopic on-line monitoring is particularly powerful for compositional analysis of complex, unknown samples. The utility of spectroscopic analysis is frequently limited by the univariate approach most commonly used to quantify analytes. The utilization of univariate analysis for spectroscopic online monitoring prevents application of this approach for more complex solution conditions, as a univariate methodology will most likely provide inaccurate results when multiple variables impact the spectroscopic observables and a departure from Beer’s law occurs.