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1996
Dissolved organic matter (DOM) is a complex mixture of organic compounds that is ubiquitous in terrestrial, aquatic, and atmospheric environments. Although it plays a key role in the global carbon cycle, it remains poorly characterized at the molecular-level because of its compositional heterogeneity and variability.
Perry J. Mitchell +2 more
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Dissolved organic matter (DOM) is a complex mixture of organic compounds that is ubiquitous in terrestrial, aquatic, and atmospheric environments. Although it plays a key role in the global carbon cycle, it remains poorly characterized at the molecular-level because of its compositional heterogeneity and variability.
Perry J. Mitchell +2 more
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Chromophoric dissolved organic matter and dissolved organic carbon in Chesapeake Bay
Marine Chemistry, 2002Chromophoric dissolved organic matter (CDOM) is the light absorbing fraction of dissolved organic carbon (DOC). The optical properties of CDOM potentially permit remote sensing of DOC and CDOM, and correction for CDOM absorption is essential for remote sensing of chlorophyll a (chl a) in coastal and estuarine waters.
E.J Rochelle-Newall, T.R Fisher
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Production of Refractory Dissolved Organic Matter by Bacteria
Science, 2001Most of the oceanic reservoir of dissolved organic matter (DOM) is of marine origin and is resistant to microbial oxidation, but little is known about the mechanisms of its formation. In a laboratory study, natural assemblages of marine bacteria rapidly (in <48 hours) utilized labile compounds (glucose, glutamate) and produced refractory DOM that ...
Ogawa, Hiroshi +4 more
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Dissolved organic matter heightens the toxicity of tetrabromobisphenol A to aquatic organisms
Ecotoxicology, 2022Tetrabromobisphenol A (TBBPA) is a new type of persistent organic pollutant, which causes environmental pollution and health problems, and has attracted the attention of the international research community. Once released into the environment, TBBPA can interact with dissolved organic matter (DOM), which affects its behavior. However, the effect of DOM
Zhuang Wang +6 more
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Photosensitized Degradation of Bisphenol A by Dissolved Organic Matter
Environmental Science & Technology, 2004The direct and indirect photolysis of bisphenol A (BPA) was investigated using a solar simulator in the absence and presence of dissolved organic matter (DOM). BPA degradation by direct photolysis was significantly slower than its rate in the presence of DOM.
Yu-Ping, Chin +4 more
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Molecular simulation of a model of dissolved organic matter
Environmental Toxicology and Chemistry, 2005Abstract A series of atomistic simulations was performed to assess the ability of the Schulten dissolved organic matter (DOM) molecule, a well-established model humic molecule, to reproduce the physical and chemical behavior of natural humic substances. The unhydrated DOM molecule had a bulk density value appropriate to humic matter, but
Sutton, R +3 more
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Ultrafiltration of Nonionic Surfactants and Dissolved Organic Matter
Environmental Science & Technology, 2004A brownwater sample with a high content of humic substances (HS) was fractionated by multistage ultrafiltration (mst-UF) into five fractions with nominal molecular weights ranging from >30 to 30 kDa fraction and decreased with decreasing MW. To evaluate whether separation mechanisms other than size exclusion were of importance during the fractionation,
Mueller, Margit B. +3 more
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Role of Dissolved Organic Matter in Ice Photochemistry
Environmental Science & Technology, 2014In this study, we provide evidence that dissolved organic matter (DOM) plays an important role in indirect photolysis processes in ice, producing reactive oxygen species (ROS) and leading to the efficient photodegradation of a probe hydrophobic organic pollutant, aldrin. Rates of DOM-mediated aldrin loss are between 2 and 56 times faster in ice than in
Amanda M, Grannas +4 more
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Temperature Dependence of Dissolved Organic Matter Fluorescence
Environmental Science & Technology, 2018The temperature dependence of organic matter fluorescence apparent quantum yields (Φf) was measured for a diverse set of organic matter isolates (i.e., marine aquatic, microbial aquatic, terrestrial aquatic, and soil) in aqueous solution and for whole water samples to determine apparent activation energies ( Ea) for radiationless decay processes of the
Garrett McKay +2 more
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Environmental Science & Technology, 2017
Reactions of dissolved organic matter (DOM) with aqueous sulfide (termed sulfurization) in anoxic environments can substantially increase DOM's reduced sulfur functional group content. Sulfurization may affect DOM-trace metal interactions, including complexation and metal-containing particle precipitation, aggregation, and dissolution.
Andrew M. Graham +5 more
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Reactions of dissolved organic matter (DOM) with aqueous sulfide (termed sulfurization) in anoxic environments can substantially increase DOM's reduced sulfur functional group content. Sulfurization may affect DOM-trace metal interactions, including complexation and metal-containing particle precipitation, aggregation, and dissolution.
Andrew M. Graham +5 more
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