Abstract
In order to determine organic carbon in sediments, a sensitive method was devised by the combination of an ordinary wet combustion and TOC analyzer for aqueous samples. The carbon dioxide evolved by wet combustion was absorbed into 0.2 N NaOH solution and determined with a TOC analyzer. The accuracy and the determination limit of the method were determined. Carbon ranges from 0.4 to 48 mg were determined accurately without interference of chlorine and sulfur. This method was applied to the study of the composition of river sediment on the basis of extractability by various solvents.
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