Total Organic Carbon

Introduction
Total organic carbon (TOC) is the amount of carbon found in an organic compound and is often used as a nonspecific indicator of water quality. The organic carbon in
water and wastewater is composed of a variety of organic compounds in various oxidation states. The TOC analyzer determines the Total Carbon (TC) and the Inorganic Carbon (IC) (dissolved carbon dioxide and carbonic acid salts). Subtracting the IC from the TC yields the Total Organic Carbon.

Principle
The TOC oxidizes by catalytic combustion at 680 ^oC organic carbon including the hard-to-decompose insoluble organic components to carbon dioxide (CO2). The CO2 is measured directly by a nondispersive infrared analyzer in the range 4 and 30,000 ppm/L.

Applications
• global environment and eutrophication
• drinking water, lakes, marshes, underground water sea
water soil, sludge's and sediments
• effluent treatment process control
• membrane retention measurements