It is well known that helium ionization gas chromatographs in the general sense are professional chromatographs and their chromatographic detectors are helium ionization detectors (HIDs). According to the professional analysis of gas chromatograph, it is mainly used for the accurate measurement of high-purity acetylene and oxygenated hydrocarbons, which is suitable for design, development and process analysis. The entire system consists of a host gas chromatograph, a chromatography workstation, and a carrier gas with a purifier. The instrument uses high purity helium to purify the carrier gas (mobile phase) and the cutting column and analytical column is GDX502. After the sample enters the sample via the dosing valve, it will enter the helium ion detector and the column will separate. An inelastic collision will occur in the metastable state. With helium, the output current will collect the corresponding mirco from the detector. The current signal is amplified by the micro-current amplifier to a component content within a certain range. Under the same conditions, the peak should be compared with the standard sample to determine the retention time and quantity by signal quality. Ningbo DOKEE Medical Technology Co., Ltd. , https://www.dokeemedical.com
High-purity gas analysis is a complex process that not only requires highly sensitive detectors, but also considers the characteristics of the sample itself and its background, such as whether there is air in the process of adsorption, sampling and analysis, the system's tightness, the system's In the dead volume and other aspects, Luchuang Chromatography Co., Ltd. summarized the technical difficulties in the process of high-purity gas analysis, and gave solutions to all difficulties, making helium ionized gas chromatograph the most professional high-purity gas analysis system in China. Good completion of trace impurities in the gas, the highest level can achieve ppb impurity analysis.
Due to the complexity of high-purity gas analysis, specific analysis needs to be treated separately.