The Shimadzu TOC system consists
of a 5000A Analyzer, an ASI Autosampler, a Solid Sample Module
(SSM) and associated computer control system. The Analyzer includes
a TC combustion unit, an IC digestion unit and a non-dispersive
infrared CO2 detection unit.
To analyze total C (TC) in liquid phase, an aqueous sample is
introduced by the autosampler into the TC combustion oven, where
the carbon components in the sample are combusted to become
CO2. The carrier gas that is
supplied for combustion contains the CO2
from TC combustion, flows through the inorganic carbon reaction
vessel, cools off and is dried by the dehumidifier.