Dissolved organic carbon , in water

Servais, P. A., A. Anzil, and C. Ventresque. 1989. Simple method for determination of biodegradable dissolved organic carbon in water. Applied and Environment Microbiology 55 2732-2734. 

In some instances the method for carbon determination has to be modified, e.g., the determination of trace amounts of what is referred to as dissolved organic carbon in water after inorganic carbon has been removed. This type of carbon determination involves wet oxidation activated by silver ions in a solution of potassium persulphate in sulphuric acid. The oxidation of organic compounds gives carbon dioxide, which is adsorbed by molecular sieves. The molecular sieves are then heated in a flow of helium to desorb the carbon dioxide, the amount of which is measured by a TCD. The lowest concentration of organic carbon that can be measured in water is 0.2—2ppm [55]. The application of chromatographic elemental analysis to the determination of the total carbon content in water has been described [56]. 

BCFtotai (free and bound (= total) PAH in water) = [Tissue]/[WatertotJ DOC is dissolved organic carbon in water (usually in mg/L or ppm), flip is the fraction of tissue that is lipid (usually in dry weight), foe is the fraction of sediment that is organic carbon (usually in dry weight). 

Marhaba, T.F., Bengraine, K., Pu, Y, and Arago, J. (2003). Spectral fluorescence signatures and partial least squares regression Model to predict dissolved organic carbon in water. J. Hazard. Mater., 97, 83-97. 

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