，便攜式氣相色譜儀。


天然氣中四氫噻吩在線氣相色譜儀測定  測試譜圖：



Determination of tetrahydrothiophene in natural gas by on-line gas chromatograph
Determination of tetrahydrothiophene in natural gas by on-line gas chromatograph

Capillary column stationary phase: 14% cyanopropyl phenyl-86% dimethyl polysiloxane
Column length: 4 meters
Inner diameter of chromatographic column: 0.10mm
Detector: TCD

The sequence of steps in the experiment is to connect the gas reference material and the chromatograph, determine the gas reference material, connect the sampling point and the chromatograph, and determine the natural gas. The natural gas measurement result also stipulates that the natural gas samples should be continuously measured under the premise of the same operating conditions. Until the repeatability of the two consecutive measurement results is within the specified range, the average of the two measurement results can be taken as the final result of the natural gas sample measurement.

The sampling system of the portable gas chromatograph used should be made of materials that are non-adsorbent or inertized to tetrahydrothiophene, and the material of the chromatographic column should also be inert and non-adsorbent to tetrahydrothiophene, or the inner wall of the chromatographic column should be Inert treatment, the packing in the column can also effectively separate the detected tetrahydrothiophene.

Sampling, injection, separation, determination, TCD detector, portable gas chromatograph.


Determination of tetrahydrothiophene in natural gas by on-line gas chromatograph Test spectrum: