Water Quality Analysis by UV-Vis Spectroscopy:A Review of Methodology and Application

Compared with the traditional approaches,UV-Vis spectroscopy is gaining growing acceptance in the field of online water-quality monitoring as an effective method for water quality analysis.UV-Vis spectroscopy has the advantages of fast response,low maintenance costs,and no secondary pollution.In the present paper,the principle of water quality analysis by UV-Vis spectroscopy is introduced.Existing researches on the online analysis of water quality using UV-Vis spectrum and data fusion technologies are comprehensively reviewed.The applications of UV-Vis based methods in multi-parameter water-quality monitoring,water-quality classification,and water-quality alarm are also discussed.Finally,future research directions are outlined.