熱導(dǎo)檢測(cè)器對(duì)于氣相色譜儀有著至關(guān)重要的作用。熱導(dǎo)檢測(cè)器是氣相色譜儀的關(guān)鍵部件,主要用于氣體成分和濃度的檢測(cè)。
在氣相色譜儀中,采用熱導(dǎo)檢測(cè)器檢測(cè)物質(zhì)成分的濃度變化,具有構(gòu)造簡(jiǎn)單、測(cè)定范圍廣、穩(wěn)定性好、線(xiàn)性范圍寬等優(yōu)點(diǎn)。
低壓下，載氣流經(jīng)色譜柱及檢測(cè)器的速度加快，峰擴(kuò)展減弱，同時(shí)柱效和檢測(cè)靈敏度提高．對(duì)低壓色譜過(guò)程的傳質(zhì)系數(shù)和分離性能進(jìn)行了探討．
浩瀚色譜（山東）應(yīng)用技術(shù)開(kāi)發(fā)有限公司，研制的熱導(dǎo)檢測(cè)器參數(shù)及指標(biāo)：
名稱(chēng)：熱導(dǎo)檢測(cè)器
型號(hào)：TCD-790
載氣：H2 60ml/min INJ: 150℃ COL: 100℃ TCD: 100℃ 橋流：180mA
靈敏度平均值：3669mV•ml/mg(苯/甲苯)
RSD%: 0.8
Thermal conductivity detectors play a crucial role in gas chromatographs. The thermal conductivity detector is a key component of a gas chromatograph, mainly used for detecting gas composition and concentration.
In gas chromatography, using a thermal conductivity detector to detect the concentration changes of substance components has the advantages of simple structure, wide measurement range, good stability, and wide linear range.
Under low pressure, the speed of carrier gas passing through the chromatographic column and detector increases, peak expansion weakens, and column efficiency and detection sensitivity increase. The mass transfer coefficient and separation performance of the low-pressure chromatographic process are discussed
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed thermal conductivity detector parameters and indicators:
Name: Thermal conductivity detector
Model: TCD-790
Carrier gas: H2 60ml/min INJ: 150 ℃ COL: 100 ℃ TCD: 100 ℃ Bridge current: 180mA
Average sensitivity value: 3669mV • ml/mg (benzene/toluene)
RSD%: 0.8
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