Analytical Sciences Thermalox TOC and TNb (thermal oxidation) elemental analyser series
|SeaVoX Device Catalogue
|Thermalox TOC and TNb series
|A series of bench-top, thermal oxidation systems. The instruments are designed for use in aqueous systems and solids. They primarily measure Total Organic Carbon (TOC) and Total Nitrogen (TN). Analysers use catalytic thermal oxidation to convert carbon or nitrogen species to either carbon dioxide (CO2) or NOx gases. CO2 is analysed using non-dispersive infrared detectors. The influence of total inorganic carbon (TIC) can be determined by introducing an aliquot of sample into a heated TIC reactor containing phosphoric acid that reacts with carbonate to form CO2. NOx is analysed using vacuum chemiluminescence detectors that utilize the chemiluminescent reaction between NO and O3 to determine the NO concentration. Because NO2 is also present as an oxidant, this is reduced in a special reduction furnace to NO. Analysers are available as separate stand-alone instruments that analyse TOC and TNb, or as a combined TOC/TNb system. The standard deviation is 20ppb for carbon and 10ppb for nitrogen.
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|Analytical Sciences Ltd
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