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天然氣中四氫噻吩在線氣相色譜儀測(cè)定
天然氣中四氫噻吩在線氣相色譜儀測(cè)定 詳細(xì)信息：

毛細(xì)管色譜柱固定相：14%氰丙基苯基-86%二甲基聚硅氧烷
色譜柱長(zhǎng)度：4米
色譜柱內(nèi)徑：0.10mm
檢測(cè)器：TCD

實(shí)驗(yàn)的步驟順序?yàn)檫B接氣體標(biāo)準(zhǔn)物質(zhì)和色譜儀、氣體標(biāo)準(zhǔn)物質(zhì)測(cè)定、連接取樣點(diǎn)和色譜儀、天然氣測(cè)定，而天然氣的測(cè)定結(jié)果也規(guī)定應(yīng)當(dāng)在操作條件不變的前提下，連續(xù)測(cè)定天然氣樣品多次，直到連續(xù)兩次測(cè)定結(jié)果的重復(fù)性在規(guī)定的范圍內(nèi)，才能取兩次測(cè)定結(jié)果的平均值作為天然氣樣品測(cè)定的*終結(jié)果。

使用的便攜式氣相色譜儀的進(jìn)樣系統(tǒng)應(yīng)當(dāng)選用對(duì)四氫噻吩無(wú)吸附性或經(jīng)惰性化處理的材料，而色譜柱的材料也應(yīng)對(duì)四氫噻吩呈惰性和無(wú)吸附性，或者色譜柱內(nèi)壁要經(jīng)惰性化處理，柱內(nèi)填充物也可以對(duì)被檢測(cè)的四氫噻吩進(jìn)行有效分離。

取樣，進(jìn)樣，分離，測(cè)定，TCD檢測(cè)器，便攜式氣相色譜儀。


天然氣中四氫噻吩在線氣相色譜儀測(cè)定  測(cè)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: