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Photobleaching of chromophoric dissolved organic matter (CDOM) in rainwater
Journal of Atmospheric Chemistry, 2007Significant photodegradation of chromophoric dissolved organic matter (CDOM) in rainwater was observed after exposure to simulated sunlight. Fluorescence excitation emission spectra (EEMS) of precipitation revealed the presence of four major peaks all of which degraded upon photolysis with the greatest loss in the region characteristic of marine CDOM ...
Robert J. Kieber +3 more
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Chemical characteristics of chromophoric dissolved organic matter in rainwater
Atmospheric Environment, 2009Abstract Proton nuclear magnetic resonance (1H-NMR), UV absorbance and excitation-emission matrix (EEM) fluorescence spectroscopy were used to define the chemical characteristics of chromophoric dissolved organic matter (CDOM) in whole and C18 extracted rainwater.
Carrie Miller +4 more
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International Journal of Remote Sensing, 1999
Since CDOM can significantly influence the optical characteristics of Case II waters, we investigated potential sources of CDOM and DOC during a month-long mesocosm experiment. Nutrient additions resulted in a large phytoplankton bloom, followed by a rapid decline.
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Since CDOM can significantly influence the optical characteristics of Case II waters, we investigated potential sources of CDOM and DOC during a month-long mesocosm experiment. Nutrient additions resulted in a large phytoplankton bloom, followed by a rapid decline.
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Colored and Chromophoric Dissolved Organic Matter in Natural Waters
2012This chapter will give a general overview on the sources and nature of colored and CDOM, biogeochemical functions of CDOM, optical variables, chromophores in the CDOM, and the theory of CDOM absorbance in natural waters. Moreover, the controlling factors of CDOM that are most important in natural waters will be discussed.
Khan M. G. Mostofa +6 more
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Dark recovery of photodegraded chromophoric dissolved organic matter
Journal of Photochemistry and Photobiology A-Chemistry, 2016Abstract Aged samples of natural waters filtered with Whatman GFF filters had been irradiated with UVA radiation then stored in darkness and checked for changes in absorbance of chromophoric dissolved organic matter (CDOM). The recovery of absorbance (integrated within 250–600 nm wavelength range) of irradiated river water, lake water and seawater ...
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Contribution of ferric iron to light absorption by chromophoric dissolved organic matter
Limnology and Oceanography, 2013This study experimentally determined the contribution of ferric iron (Fe(III)) associated with humic substances (HS) to light absorption by chromophoric dissolved organic matter (CDOM). The associations between Fe(III) and HS (HS‐Fe) were generated by mixing HS standards with Fe(III) in acidic conditions and adjusting pH to 8.
Vähätalo Anssi V. +3 more
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Environmental Science and Pollution Research, 2013
The Yangtze Estuary is heavily influenced by coast-continent geochemical processes and anthropogenic activity; thus, the source and distribution of chromophoric dissolved organic matter (CDOM) in the estuary are strongly impacted by these processes. Here, a series of samples were collected from across the Yangtze Estuary to investigate the source and ...
Qiyuan, Sun +4 more
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The Yangtze Estuary is heavily influenced by coast-continent geochemical processes and anthropogenic activity; thus, the source and distribution of chromophoric dissolved organic matter (CDOM) in the estuary are strongly impacted by these processes. Here, a series of samples were collected from across the Yangtze Estuary to investigate the source and ...
Qiyuan, Sun +4 more
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Chromophoric Dissolved Organic Matter Fluctuation Assessment in an Urban River
CLEAN – Soil, Air, Water, 2015AbstractTo investigate the compositions and spatio‐temporal changes of chromophoric dissolved organic matter (CDOM) in a typical urban river in Taihu Basin, China, that has been treated with series of water quality mitigation measures, 180 water samples were collected from November 2011 to October 2012 and analyzed with fluorescence excitation–emission
Yuting Liang +6 more
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The role of nitrogen in chromophoric and fluorescent dissolved organic matter formation
Marine Chemistry, 2007Abstract Microbial and photochemical processes affect chromophoric dissolved organic matter (CDOM) dynamics in the ocean. Some evidence suggests that dissolved nitrogen plays a role in CDOM formation, although this has received little systematic attention in marine ecosystems.
Erin J. Biers +2 more
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Effect of chromophoric dissolved organic matter on epilimnetic stratification in lakes
Aquatic Sciences, 2008Empirical studies on lake thermal regimes have shown that stratification is correlated with the concentration of dissolved organic matter (DOM). Thermal stratification has implications for photosynthesis, photoinhibition, photobleaching and carbon cycling.
Caplanne, Sophie, Laurion, Isabelle
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