HH-NMHC-1专用柱 单柱直测法测定空气中甲烷和非甲烷总烃

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单柱直测法测定空气中甲烷和非甲烷总烃
单柱直测法测定空气中甲烷和非甲烷总烃 详细信息：


用直接进样差量气相色谱法测定非甲烷总烃(NMHC)量。测定结果将产生较大偏差,甚可能产生负值,应该用以除烃空气为底气的标准气来定量空气样品;某些样品测定过程中,总烃不只出一个峰,需要调节相关条件再进行测定。

浩瀚色谱（山东）应用技术开发有限公司采用单柱单氢火焰离子检测器(FID)气相色谱法测定空气中的非甲烷总烃(NMHC)和甲烷,通过十通阀进样和切换,实现一次进样就可以完成甲烷和NMHC的同步测定,且无氧峰干扰。与双柱双FID检测器气相色谱法相比,该方法不用测算氧峰,更加简便,分析结果准确,且重复性良好。

此法只需2根填充柱，一次进样，即可得到非甲烷总烃的含量，效率高，结果准确，此柱为浩瀚色谱的产品。

名称：直测法专用填充柱
规格：1m*1/8
型号：HH-NMHC
满足2021年新标准


单柱直测法测定空气中甲烷和非甲烷总烃  测试谱图：




Determination of methane and non-methane total hydrocarbons in air by single-column direct measurement
Determination of methane and non-methane total hydrocarbons in air by single-column direct measurement Details:


The amount of non-methane total hydrocarbons (NMHC) was determined by direct injection differential gas chromatography. The measurement results will produce large deviations, and may even produce negative values. The standard gas with hydrocarbon-removing air as the bottom gas should be used to quantify the air samples; during the determination of some samples, the total hydrocarbons have more than one peak, and the relevant conditions need to be adjusted. Determination.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. uses single-column single-hydrogen flame ionization detector (FID) gas chromatography to determine non-methane total hydrocarbons (NMHC) and methane in the air. The ten-port valve is injected and switched to achieve one-time Simultaneous determination of methane and NMHC can be accomplished by injecting the sample without the interference of oxygen peaks. Compared with the dual-column dual-FID detector gas chromatography method, this method does not need to measure the oxygen peak, which is simpler, and the analytical results are accurate and reliable, and the repeatability is good.

This method requires only 2 packed columns and one injection to obtain the content of total non-methane hydrocarbons, with high efficiency and accurate and reliable results. This column is a unique product of Haohan Chromatography.

Name: Packed column for direct measurement
Specifications: 1m*1/8
Model: HH-NMHC
Meet the new standards for 2021


Determination of methane and non-methane total hydrocarbons in air by single-column direct measurement Test spectrum: