1m*1/8 非甲烷总烃在线分析直测专用柱HH-NMHC-1

非甲烷总烃(NMHC)通常是指除甲烷以外的所有可挥发的碳氢化合物(其中主要是C2-C8)的总称.一般环境空气中非甲烷总烃的含量不高,但随着近年工业的发展,大量废气排入环境空气中.大气中的非甲烷总烃超过一定浓度,除直接对人体健康有害外,在一定条件下经日光照射还能产生光化学烟雾,对环境和人类造成危害.

现有的气相色谱测定方法主要采用双柱双阀单检测器或双柱单阀单检测器，分别测定甲烷和总烃的浓度，再以差减计算非甲烷总烃含量。这种方法需要差减计算，有时得到负值。困扰着广大的分析工作者。

浩瀚色谱（山东）应用技术开发有限公司研发直接法测定非甲烷总烃，即将非甲烷总烃从总烃中分离，直接测定非甲烷总烃浓度的方法。直接法可采用单柱单阀单检测器完成分析，可避免氧峰干扰，可提高分析效率，节约分析仪器成本。

名称：甲烷填充柱
粒度：60-80目
规格：1m*1/8
*高温度：270℃

Direct measurement special column HH-NMHC-1 for online analysis of non methane total hydrocarbons

Details of HH-NMHC-1 special column for online analysis and direct measurement of non methane total hydrocarbons:



Non methane hydrocarbon (NMHC) generally refers to all volatile hydrocarbons (mainly C2-C8) except methane Generally, the content of non methane hydrocarbon in the ambient air is not high, but with the development of industry in recent years, a large amount of waste gas is discharged into the ambient air When the concentration of NMHC in the atmosphere exceeds a certain level, it is not only directly harmful to human health, but also can produce photochemical smog under certain conditions when exposed to sunlight, causing harm to the environment and human beings





The existing gas chromatographic determination methods mainly use double column, double valve and single detector or double column, single valve and single detector to measure the concentration of methane and total hydrocarbon respectively, and then calculate the content of non methane total hydrocarbon by difference. This method requires a difference calculation, sometimes a negative value is obtained. The analysts in Guangdong are perplexed.



Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed a direct method to determine the concentration of non methane total hydrocarbons, that is, to separate non methane total hydrocarbons from total hydrocarbons. The direct method can use a single column, single valve and single detector to complete the analysis, which can avoid the interference of oxygen peak, improve the analysis efficiency and save the cost of analytical instruments.




Name: methane packed column

Particle size: 60-80 mesh

Specification: 1m * 1/8

*High temperature: 270 ℃



Application: customization of direct measurement packed column of non methane hydrocarbon





Test spectrogram of HH-NMHC-1 special column for online analysis and direct measurement of non methane total hydrocarbon: