GDX502甲烷柱和总烃填充柱

固定相：高聚物
规格2m*3mm，2m*4mm，2m*1/8
粒度：60-80目
型号：GDX-104，GDX-502

固定相：硅烷化玻璃微球

应用：HJ 604-2017 环境空气 总烃、甲烷和非甲烷总烃的测定 直接进样-气相色谱法

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)。监测环境空气和工业废气中的NMHC有许多方法,但多数采用直接进样差量法气相色谱测定NMHC。即用气相色谱仪以火焰离子化检测器分别测定空气中总烃及甲烷的含量,两者之差即为非甲烷总烃的含量。非甲烷总烃是国标中规定的大气中重要污染物排放参数,因为大气中的NMHC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。

滕州市浩瀚色谱仪器技术服务有限公司，采用带有双柱单氢焰离子化检测器的气相色谱仪,直接进样差量法测定非甲烷总烃的含量。方法检出限为0.015mg/m3;RSD在0.9%~3.2%之间;加标回收率为95.4%~101.7%。该方法操作简单,定量准确,结果符合实验要求。

GDX502甲烷柱和总烃填充柱 图片：


GDX502 methane column and total hydrocarbon packed column
GDX502 methane column and total hydrocarbon packed column Details:

Stationary phase: high polymer
Specifications 2m*3mm, 2m*4mm, 2m*1/8
Particle size: 60-80 mesh
Model: GDX-104, GDX-502

Stationary phase: silanized glass microspheres
Particle size: 80-60 mesh
Specifications: 2m*4mm, 2m*3mm, 2m*1/8 (Agilent, Shimadzu)
Model: HH-NMHC-2
Application: HJ 604-2017 Ambient air Determination of total hydrocarbons, methane and non-methane total hydrocarbons Direct injection - gas chromatography

Non-methane total hydrocarbons (NMHC) generally refer to all volatile hydrocarbons other than methane (mainly (C2~C8). There are many methods for monitoring NMHC in ambient air and industrial waste gas, but most countries adopt direct The NMHC was determined by differential gas chromatography. The content of total hydrocarbons and methane in the air was determined by gas chromatograph with flame ionization detector. The difference between the two is the content of non-methane total hydrocarbons. The non-methane total hydrocarbons are the national standard. The parameters of important pollutants in the atmosphere specified in the atmosphere, because the NMHC in the atmosphere exceeds a certain concentration, in addition to being directly harmful to human health, under certain conditions, photochemical smog can also be generated by sunlight, causing harm to the environment and humans.

Tengzhou Haohao Chromatography Instrument Technology Service Co., Ltd. uses a gas chromatograph with a two-column monohydrogen flame ionization detector to determine the content of non-methane total hydrocarbons by direct injection differential method. The detection limit of the method was 0.015 mg/m3; the RSD was between 0.9% and 3.2%; the recoveries were 95.4%~101.7%. The method is simple in operation, accurate in quantitative, and the results meet the experimental requirements.

GDX502 methane column and total hydrocarbon packed column