Measurement and Testing
Monitoring of liquid matrices by gas chromatography using a simplified and enhanced headspace sampling system
Dec 18 2019 Read 420 Times
Chromatotec® offers a headspace sampling system designed to extract representative samples from the liquid phase. The vapourised sample can be pre-concentrated using a trap to achieve quantification at very low concentration levels (ppb and/or ppm). Then, it is injected automatically, and in continuous mode, into the auto-GC analyser. Speciation of sulphur compounds or VOCs is carried out with a MEDOR® sulphur specific electrochemical detector or an FID respectively. The complete system enables online analysis without human intervention.
This technology can be used for a wide variety of applications in the oil and gas industry; for example, it facilitates controlling the effectiveness of the LPG odourisation process with DMS and TBM, to alert in cases of leakage. In aqueous mode, it has been used for the analysis of acrylonitrile. This polymer is used in plastics, fibres or as a component of additives to enhance oil recovery. This sampling system reduces the risk of polymerisation of its monomer, acrylamide and avoids clogging columns.
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