Disinfection By-Product Formation Potentials of Hydrophobic and Hydrophilic Natural Organic Matter Fractions: A Comparison Between a Low- and a High-Humic Water

2000 ◽  
pp. 139-153 ◽  
Author(s):  
Jean-Philippe Croué ◽  
David Violleau ◽  
Laurence Labouyrie
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Product Formation ◽  
Organic Matter Fractions

Identification of humic acid-like and fulvic acid-like natural organic matter in river water using fluorescence spectroscopy

2011 ◽  
Vol 63 (10) ◽  
pp. 2427-2433 ◽  
Author(s):  
R. H. Peiris ◽  
H. Budman ◽  
C. Moresoli ◽  
R. L. Legge
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Water Sample ◽  
Fulvic Acid ◽  
River Water ◽  
Natural Organic Matter ◽  
Drinking Water Treatment ◽  
Fluorescence Analysis ◽  
Product Formation ◽  
Fluorescence Excitation

Identifying the extent of humic acid (HA)-like and fulvic acid (FA)-like natural organic matter (NOM) present in natural water is important to assess disinfection by-product formation and fouling potential during drinking water treatment applications. However, the unique fluorescence properties related to HA-like NOM is masked by the fluorescence signals of the more abundant FA-like NOM. For this reason, it is not possible to accurately characterize HA-like and FA-like NOM components in a single water sample using direct fluorescence EEM analysis. A relatively simple approach is described here that demonstrates the feasibility of using a fluorescence excitation-emission matrix (EEM) approach for identifying HA-like and FA-like NOM fractions in water when used in combination with a series of pH adjustments and filtration steps. It is demonstrated that the fluorescence EEMs of HA-like and FA-like NOM fractions from the river water sample possessed different spectral properties. Fractionation of HA-like and FA-like NOM prior to fluorescence analysis is therefore proposed as a more reasonable approach.

Reactivity of natural organic matter fractions with chlorine dioxide and ozone

2004 ◽  
Vol 38 (3) ◽  
pp. 547-558 ◽  
Author(s):  
J. Świetlik ◽  
A. Dąbrowska ◽  
U. Raczyk-Stanisławiak ◽  
J. Nawrocki
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Chlorine Dioxide ◽  
Organic Matter Fractions
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