Total Organic Carbon, Shimadzu TOC-L

The TOC-L utilizes the combustion catalytic oxidation method, which makes it possible to efficiently oxidize not only easily-decomposed, low-molecular - weight organic compounds, but also hard-to-decompose insoluble and macromolecular organic compounds. A known amount of sample is introduced into the instrument and is either combusted (TC, TOC, NPOC) through heating at 680C with a platinum catalyst or acidified with Hydrochloric acid 0.1 M and sparged with compressed zero air to remove inorganic carbon (IC). Carbon content is measured as CO2 by non-dispersive infrared gas analysis. The practical range of determination for this method as reported by the manufacturer is 0 – 25000 ug/L.