在工業(yè)生產(chǎn)過程中,傳統(tǒng)方法分析N_2、H_2、O_2、CO和CO_2一般采用TCD檢測(cè)器或者將微量的CO和CO_2通過鎳轉(zhuǎn)化爐轉(zhuǎn)化為CH_4采用FID檢測(cè)器來分析。但由于上述兩種檢測(cè)器的檢出限限制,對(duì)于痕量的物質(zhì)不能夠準(zhǔn)確的測(cè)定。

氦離子化檢測(cè)器是一種靈敏度極高的通用型檢測(cè)器,對(duì)幾乎所有無機(jī)和有機(jī)化合物均有很高的響應(yīng),特別適合高純氣體的分析,是能夠檢測(cè)ppb級(jí)的檢測(cè)器。


浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司采用氦離子化檢測(cè)器氣相色譜儀進(jìn)樣分析,能夠快速準(zhǔn)確的測(cè)定出甲醇制烯烴工藝過程中乙烯、丙烯中所含的N_2、H_2、O_2、CO和CH_4等痕量物質(zhì)。本方法相對(duì)于傳統(tǒng)方法具有分析速度快、準(zhǔn)確度高、靈敏度高等優(yōu)點(diǎn),能夠滿足聚合級(jí)乙烯和丙烯的純度分析,是一種可行的分析方法。

乙烯丙烯中N2、H2、O2、CO和CH4 測(cè)試譜圖：



N2, H2, O2, CO and CH4 in ethylene propylene
Details of N2, H2, O2, CO and CH4 in ethylene propylene:

Name: Packed column

Specification: 3m*1/8

Model: 5A



Name: Capillary Column
Specification: 30m*0.53mm*20um
Model: HH-PLOT Q
Application: Method for rapid determination of trace N_2, H_2, O_2, CO and CH_4 in polymer grade ethylene and propylene


In the industrial production process, the traditional methods to analyze N_2, H_2, O_2, CO, and CO_2 generally use TCD detectors or convert trace amounts of CO and CO_2 into CH_4 through a nickel converter for analysis using FID detectors. However, due to the detection limits of the above two detectors, it is not possible to accurately determine trace amounts of substances.

The helium ionization detector is a general-purpose detector with extremely high sensitivity. It has a high response to almost all inorganic and organic compounds. It is especially suitable for the analysis of high-purity gases. It is the only detector that can detect to the ppb level.


Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. uses helium ionization detector gas chromatograph for sample injection analysis, which can quickly and accurately determine the N_2, H_2, O_2, CO, and propylene contained in ethylene and propylene during the methanol-to-olefin process. Trace substances such as CH_4. Compared with traditional methods, this method has the advantages of fast analysis speed, high accuracy and high sensitivity. It can meet the purity analysis of polymer-grade ethylene and propylene. It is a feasible analysis method.

Test spectrum of N2, H2, O2, CO and CH4 in ethylene propylene:
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