Download e-book for iPad: Advances in the physicochemical characterization of by Fernando Rosario-Ortiz

By Fernando Rosario-Ortiz

ISBN-10: 0841229481

ISBN-13: 9780841229488

ISBN-10: 0841229511

ISBN-13: 9780841229518

The examine of dissolved natural subject (DOM) has interested scientists and engineers for no less than 60 years - from the preliminary efforts all in favour of measuring the concentrations of carbon in marine and aquatic structures, to the invention of the position of DOM within the formation of disinfection byproducts, the entire solution to the hot emphasis at the designated knowing of different practical teams and simple structural positive aspects that are the root for the physicochemical homes of the fabric. After 50 years of labor within the quarter, there are nonetheless many questions relating to DOM.
The learn of dissolved natural topic (DOM) has interested researchers in several fields of technology and engineering for plenty of a long time. The influence that DOM has on a wide range of environmental tactics has ended in the advance of a multidisciplinary neighborhood of researchers all targeting utilizing varied analytical strategies and experimental layout to raised comprehend DOM. This e-book deals decide on case stories targeting the complicated characterization of DOM in numerous environments and with appreciate to assorted approaches. It effects from the belief of a symposium that E. M. Thurman and that i had geared up for the 245th assembly of the yankee Chemical Society, which used to be hung on April 7-11, 2013 in New Orleans, Louisiana

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Extra info for Advances in the physicochemical characterization of dissolved organic matter : impact on natural and engineered systems

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In fact, rivers serve as active reactors of DOM processing (8) and a significant portion of DOM is lost during transport (3). Similarly, through complex interactions of physical, chemical and biological processes, receiving water bodies such as lakes, wetlands and estuaries can process large amounts of DOM exported by rivers (9, 10) ultimately affecting the quantity, quality, transport and fate of DOM. Carbon cycling in aquatic environments is controlled by a variety of physical and biological drivers such as watershed land-use, morphology, microbial activity, hydrology and climate.

Due to the ability of the fluorescent fraction of DOM to absorb light, its degradation through photo-bleaching or photo-degradation has been suggested as an important sink (108, 109). In addition, photo-alteration of DOM in sunlit waters has been reported to be an important process controlling DOM quality in estuaries and coastal systems (89, 91, 110, 111). Specifically, Stedmon et 49 vances in the Physicochemical Characterization of Dissolved Organic Matter: Impact on Natural and Engineered Systems; Rosario-Orti ACS Symposium Series; American Chemical Society: Washington, DC, 2014.

In a stratified lake used as a drinking water source, Pifer et al. (80) reported an increase in total fluorescence at mid-depth (10m below the surface) compared to 3 m or 18 m depths. The deepest sample had the lowest fluorescence intensity. The protein-like component had the highest relative abundance at the surface and based on field flow fractionation data was predominantly present in the larger sized fraction of DOM. These findings suggest that drinking water treatment facilities may be able to use DOM characterization techniques, such as EEM-PARAFAC, to understand their source water characteristics in order to control disinfection byproduct (DBP) formation by choosing a different mixture of source waters or locating their intake at a different depth based on DOM quality.

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Advances in the physicochemical characterization of dissolved organic matter : impact on natural and engineered systems by Fernando Rosario-Ortiz

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