期刊
ENVIRONMENTAL ENGINEERING SCIENCE
卷 26, 期 7, 页码 1163-1170出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/ees.2009.0035
关键词
excitation-emission matrix (EEM); DBP formation; chlorine; fractionation; NOM characterization
Multifactor linear regression was used to correlate water quality characteristics of Iowa River water and four of its isolates to chlorinated disinfection byproduct (DBP) formation. Fluorescence regional integration (FRI) was used to measure changes in cumulative regional intensity of five operationally defined regions from excitation-emission matrices (EEM) subsequent to chlorination. The changes within the five regions alone correlated to the formation of Cl(3)AA (R-2 = 0.75), Cl(2)AA (R-2 = 0.38), CHCl3 (R-2 = 0.33), and Cl(3)AA + CHCl3 (R-2 = 0.59). The combination of FRI and chlorine consumption increased the predictive capabilities for Cl(3)AA (R-2 = 0.90), Cl(2)AA (R-2 = 0.86), CHCl3 (R-2 = 0.82), and Cl(3)AA + CHCl3 (R-2 = 0.92). Stepwise regression of fluorescence regions yielded similar results by utilizing only one region coupled with chlorine consumption; however, three different regions were required for the formation of each individual compound assessed. These results suggest that regional transformation coupled with chlorine consumption can be an effective tool for the prediction of DBP and provide insight to locations within the EEM for individual DBP compound precursor.
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