By Fernando Rosario-Ortiz
The research of dissolved natural topic (DOM) has interested scientists and engineers for a minimum of 60 years - from the preliminary efforts fascinated about measuring the concentrations of carbon in marine and aquatic structures, to the invention of the function of DOM within the formation of disinfection byproducts, the entire method to the recent emphasis at the specified realizing of the various sensible teams and uncomplicated structural good points that are the foundation for the physicochemical houses of the fabric. After 50 years of labor within the zone, there are nonetheless many questions relating to DOM.
The examine of dissolved natural topic (DOM) has interested researchers in numerous fields of technology and engineering for plenty of a long time. The effect that DOM has on a wide range of environmental strategies has ended in the advance of a multidisciplinary neighborhood of researchers all concentrating on utilizing diversified analytical recommendations and experimental layout to raised comprehend DOM. This booklet deals decide on case reports concentrating on the complicated characterization of DOM in numerous environments and with recognize to assorted tactics. It effects from the realization of a symposium that E. M. Thurman and that i had prepared for the 245th assembly of the yank Chemical Society, which used to be hung on April 7-11, 2013 in New Orleans, Louisiana
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Extra resources for Advances in the physicochemical characterization of dissolved organic matter : impact on natural and engineered systems
2014 American Chemical Society 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. ch003 Introduction Dissolved organic matter (DOM) is ubiquitous in the environment and represents the largest pool of reduced carbon in aquatic ecosystems. As such, it plays important roles in ecosystem functions and biogeochemical processes (1). Among other functions, DOM serves as a light attenuator in aquatic systems (2), as a metabolic substrate for heterotrophic bacteria (3), and as a medium to transport trace metals (4).
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This seasonal influx of autochthonous, microbial DOM in alpine lakes is also reactive in surface waters. Miller et al. (74) used the fluorescence index (FI) and the PARAFAC-based RI to better understand the transformations of non-humic autochthonous DOM in alpine lakes. They proposed that photochemically driven condensation reactions transformed non-humic cellular exudates to microbial fulvic acids (Figure 3). In Arctic thaw ponds, photo-exposure of DOM in lakes has also been reported to alter the quality of DOM (75).