固定相：高分子小球

GDX-502，2m*3mm，2m*4mm，2m*1/8，60-80目

甲烷柱

總烴柱

2m*3mm，2m*4mm，2m*1/8，硅烷化玻璃微球

非甲烷總烴（non methane total hydrocarbon，縮寫NMHC）是存在于環(huán)境空氣中除甲烷之外的所有碳氫化合物的總稱。大氣中的非甲烷總烴超過一定濃度，除直接對人體健康有害外，在一定條件下經(jīng)日光照射還能產(chǎn)生光化學煙霧，對環(huán)境和人類造成危害。
滕州市浩瀚色譜儀器技術(shù)服務有限公司，采用氣相色譜法檢測空氣中的非甲烷總烴需扣除會產(chǎn)生正干擾的氧峰,采用填充GDX-502擔體的填充柱測甲烷時,可以將氧峰很好的分離出來,且能保持良好的穩(wěn)定性,以此得出的氧濃度也可參與非甲烷總烴的計算。

應用氣相色譜法檢測空氣中非甲烷總烴 圖片：


Determination of non-methane total hydrocarbons in air by gas chromatography
Determination of non-methane total hydrocarbons in air by gas chromatography

Stationary phase: polymer pellet
GDX-502, 2m*3mm, 2m*4mm, 2m*1/8, 60-80 mesh
Methane column

Total hydrocarbon column
2m*3mm, 2m*4mm, 2m*1/8, silanized glass microspheres

Non methane total hydrocarbon (NMHC) is a general term for all hydrocarbons other than methane present in ambient air. The total non-methane hydrocarbons in the atmosphere exceed 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 gas chromatography to detect non-methane total hydrocarbons in the air and deducts the oxygen peak which will produce positive interference. When the methane is filled with a packed column filled with GDX-502, the oxygen peak can be very high. Good separation and good stability, the resulting oxygen concentration can also participate in the calculation of non-methane total hydrocarbons.

Determination of non-methane total hydrocarbons in air by gas chromatography