TOC is used to analyze the quantity of Total Carbon (TC), Inorganic Carbon (IC) and Total Organic Carbon (TOC) in aqueous solutions and solid samples, like groundwater, suspensions, sediments or soils. The method is based on the oxidation of carbon by catalytic combustion and the subsequent analyses of generated CO2 by non-dispersive infrared detection. The TOC content can be measured by the difference of TOC = TC - IC or via the "non-purgeable-organic-carbon" (NPOC) method.
Analyses can be done on request at the Karl Franzens University of Graz.