To dissolved organic matter

Ohlenbusch G, Kumke MU, Frimmel FH (2000) Sorption of phenols to dissolved organic matter investigated by solid phase microextraction. Sci Total Environ 253 63-74... 

Sipos et al. [789] have described a procedure for the simultaneous determination of copper and mercury in seawater down to the ng/1 range using differential pulse ASV at a gold electrode. Pretreatment is necessary, and comprises UV irradiation to release the trace metal bound to dissolved organic matter. 

Thomsen M, Dobel S, Lassen P, Carlsen L, Mogensen BB, Hansen PE (2002) Reverse quantitative structure-activity relationship for modelling the sorption of esfenvalerate to dissolved organic matter. A multivariate approach. Chemosphere 49 1317-1325... 

Sorption of Neutral Compounds to Dissolved Organic Matter (DOM)... 

P 9.6 Is Sorption to Dissolved Organic Matter Important for the Environmental Behavior of Naphthalene ... 

In addition, field studies show considerable variations in the partition coefficients for several organic chemicals to dissolved organic matter from different sources, although the concentration of dissolved organic matter in the different waters was similar (Evans, 1988 ... 

Raber, B., I. Kogel-Knauber, C. Stein, and D. Klem. 1998. Partitioning of polycyclic aromatic hydrocarbons to dissolved organic matter from different soils. Chemosphere 36 79. 

Bioavailability Indication of the fraction of the total amount of a chemical present in a specific environmental compartment that, within a given time span, is or can be made available for uptake by organisms (adopted from Peijnenburg and Jager 2003). Also defined as the extent to which the form of a chemical is susceptible to being taken up by an organism. A chemical is said to be bioavailable if it is in a form that is readily taken up (e.g., dissolved) rather than a less available form (e.g., adsorbed to solids or to dissolved organic matter). 

Ertuu9, T., Hartlieb, N., Bems, A., Klein, W., and Schaeffer, A. 2002. Investigations on the binding mechanism of the herbicide simazine to dissolved organic matter in leachates of compost. Chemosphere, 49 597-604. 

Useful for salts of carbonates, some oxides and some sulphides. A weak reducing agent not generally used to dissolve organic matter... 

The enhancement in photoreaction rates of DDE and dichlorobenzc phenone on sorption to dissolved organic matter (DOM) seem to be incor sistent with other reports that the fluorescence of aromatic hydrocarbons strongly quenched by sorption to DOM (30, 33, 34). After all, fluorescence like photoreaction, is an excited-state process, and fluorescence quenchin indicates that locally high concentrations of excited-state quenchers are pre ent in the NOM. However, most NOM is fluorescent itself, a condition ii dicating that the quenchers in NOM cannot quench all excited states efl ciently (41). Possible explanations for the difference in the effects of sorptic... 

Ohlenbusch, G. and Frimmel, F.H. (2001) Investigations on the sorption of phenols to dissolved organic matter by a QSAR study. Chemosphere, 45, 323-327. 

Olsen s extractant has a minor disadvantage it tends to dissolve organic matter resulting in coloured extracts which interferes in colorimetric estimation. Thus activated charcoal is used with the soils to adsorb soluble organic matter. The charcoal must be phosphate free totally. Also carbon dioxide bubbles are formed during colour development which must be completely removed by allowing time or else the COg bubbles interfere with colorimetry. 

The nonelemental contaminants originate almost exclusively from human activity. Estrones, steroid hormones that are endocrine disrupting chemicals (EDCs), find their way into the environment as metabofites from birth control piUs and fertility medications. They have a strong affinity for humic acid, which leads them to bind to dissolved organic matter and be deposited when the matter drops out of solution (81). PCBs were widely used as coolants and lubricants in capacitors, transformers, and other electrical equipment because of their nonflammable and insulating properties. While PCBs are no longer manufactured in the United States, they are still present in old transformers and capacitors, and are pollutants in soils and sludge in more than 400 U.S. sites (82). 

Turbidity defines water opalescence, due much more to colloidal particles in suspension and to "dissolved" organic matter than to the SS as such. 

It is due to dissolved organic matter, to ferritic iron precipitated out in a colloidal hydroxide form, to ferrous iron bonded to organic complexes and to a number of colloids,... 

Haitzer, M., Aiken, G.R., and Ryan, JJ4. (2002). Binding of mercury (II) to dissolved organic matter The role of mercury to DOM concentration ratio. Environ. Sci. TechnoL, 36, 3564-3570. 

Kraus, T.E. C., Bergamaschi, B.A., Hemes, P.J., Spencer, R.G.M., Stepanauskas, R., Kendall, C., Losee, R.E., and Eujii, R. (2008). Assessing the contribution of wetlands and subsided islands to dissolved organic matter and disinfection byproduct... 

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