Original paper

The determination of organic matter in river sediments

Bretschko, G.; Leichtfried, M.


The importance of organic matter in ecosystems is characterized and the traditional methods for determining organic matter - wet oxidation and loss of weight on ignition - are shortly discussed. It is shown that both methods are inadequat for general use. Organic carbon is proposed for quantifying organic matter. The precision of organic carbon determinations with LECO LOW CARBON ANALYZER is described. The characterization of the nutritive quality of organic matter by means of nitrogen and phosphorus concentrations is discussed. A method for determining phosphorus and nitrogen in one sample as well as an approximation to differentiate between organic and inorganic bound nitrogen and phosphorus are described.


river sedimentorganic carbonnitrogenphosphorusnutritive quality