Identification of sources, characteristics and photochemical transformations of dissolved organic matter with EEM-PARAFAC in the Wei River of China

Role of Antioxidant Moieties in the Quenching of a Purine Radical by Dissolved Organic Matter

“…DOM is a mixture with diverse functional groups and DOM from different origins is known to have distinct properties. − For example, different DOM types exhibit diverse reactivity toward inorganic radicals like dichlorine radical anions (Cl 2 •– ) and carbonate radicals (CO 3 •– ). The difference can be 9–16-fold.…”

Fluorophores in surface freshwaters: importance, likely structures, and possible impacts of climate change

“…Although proteins are definitely not the main UVC absorbers in water samples, their fluorescence emission under UVC excitation enables clear identification of their occurrence in a sample. 14,34 Therefore, the consideration of both absorption and fluorescence spectra provides a considerable amount of information about the nature of organic matter in water samples. 35 The ability of some water constituents to emit fluorescence radiation has been extensively exploited, especially in the application of fluorescence spectroscopy to the characterisation of natural waters.…”

Source identification and characteristics of dissolved organic matter and disinfection by-product formation potential using EEM-PARAFAC in the Manas River, China

“…[35][36][37] In terms of spatial trend, the DOC content displayed an expected decreasing trend from upstream to downstream because the downstream regions of the Manas River are mainly rural and agricultural areas, whereas the urban and industrial areas are located in the upstream regions. 38 The values upstream may also be higher owing to the contribution of domestic sewage and industrial wastewater to the DOC content in the upstream, as well as the water ow from the Jiahezi Reservoir upstream. Owing to the low dri and long retention time, the water quality of the reservoir undergoes complex physical, chemical, and biological changes; it usually contains a high DOC content.…”