How Does It Work?

Sample is introduced to the analyzer either ON-LINE from the facility or a TEST position as selected by valve V1. Sample is drawn to the TIC Removal assembly by pump P3. The TIC is then converted to dissolved CO₂ and swept out by sparge gas of oxygen or CO₂ free air. The remaining sample containing organic carbon is then pumped by P1 to the UV Reactor where the TOC is oxidized to CO₂. The reacted sample continuously flows to the Concentrator where a portion of the sample is vaporized and all the CO₂ gas is separated from the liquid sample containing all the interferring ions which then flows to drain. Pump P2 draws the CO₂ laden vapor through the Condenser where CO₂ is reabsorbed in the condensate which is measured by the Conductivity Sensor and converted by the PLC to ppb/ppt units of TOC without interference. For example concentration factors of 20 to 30 actually provide 1,900% to 3,900% gain sensitivities, allowing the most reliable PPT (parts-per-trillion) TOC analysis.

Components