UV spectrophotometry as a non-parametric measurement of water and wastewater quality variability

摘要: The composition of water and wastewater, varying temporally spatially, depends on factors such as environmental context, types pollution sources, weather conditions leading to dilution or solids transportation, length sewer network, etc. Because quantitative parameters are often not adapted for the characterization wastewater quality variability, a nonparametric measurement is proposed, based comparison UV absorption spectra samples. presence isosbestic points, occurring in set either directly indirectly after normalization, allows quantification variability given effluent. A normalization step used when exists case mixture (discharge rain). Several examples show how calculate estimate factor from data, even without results physicochemical parameters.