在工业生产过程中,传统方法分析N_2、H_2、O_2、CO和CO_2一般采用TCD检测器或者将微量的CO和CO_2通过镍转化炉转化为CH_4采用FID检测器来分析。但由于上述两种检测器的检出限限制,对于痕量的物质不能够准确的测定。

氦离子化检测器是一种灵敏度极高的通用型检测器,对几乎所有无机和有机化合物均有很高的响应,特别适合高纯气体的分析,是能够检测ppb级的检测器。


浩瀚色谱（山东）应用技术开发有限公司采用氦离子化检测器气相色谱仪进样分析,能够快速准确的测定出甲醇制烯烃工艺过程中乙烯、丙烯中所含的N_2、H_2、O_2、CO和CH_4等痕量物质。本方法相对于传统方法具有分析速度快、准确度高、灵敏度高等优点,能够满足聚合级乙烯和丙烯的纯度分析,是一种可行的分析方法。

乙烯丙烯中N2、H2、O2、CO和CH4 测试谱图：



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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