Chloroform Formation Prediction in Raw Water of a Northern City Based on the Combined EEMs and UV-Vis Methods
The three-dimensional fluorescence spectra were used to determine the origin of dissolved organic matter(DOM)in raw water by calculating the fluorescence index(FI)and to investigate the relationship between the production of trichloromethane after chlorination and the UV-Vis spectral properties of DOM in water.The results showed that when the DOM in the raw water was mainly metabolites of microorganisms,the amount of trichloromethane produced after chlorination could be calculated by measuring the absorbance of the dissolved organic matter at 280 nm and calculating the negative logarithm-lnA280.This provides a simpler and less costly method of predicting the mass concentration of trichloromethane.
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