GDX-502甲烷柱 测定气体中非甲烷总烃

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

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

非甲烷总烃在监测过程中,废气样品保存容器的选择和保存时间的长短对分析结果有重要影响.研究结果表明:使用玻璃注射器保存样品,应在8 h内完成分析;使用泰德拉惰性气袋保存样品,保存时间可延长48 h,如废气中主要组分为沸点高于150℃的高沸点化合物,则应在8 h内完成非甲烷总烃的测定.

浩瀚色谱（山东）应用技术开发有限公司采用自动进样和气体分流技术,双柱双FID检测器气相色谱法测定气体中的非甲烷总烃,实现了非甲烷总烃的连续自动分析,同时一次进样即可得到甲烷和总烃的数据。方法的检出限为0.05 mg/m3,测定的相对标准偏差在0.7%~1.8%内,非甲烷总烃的加标回收率为96.0%~98.5%。与传统手动进样法相比,本方法具有重复性好、操作简单、省时等优点,可大大提高气体中非甲烷总烃的分析效率和准确度。


测定气体中非甲烷总烃 测试谱图：



Determination of non-methane total hydrocarbons in gas
Determination of non-methane total hydrocarbons in gas Details:

Methane column
Stationary phase: polymer
Specification 2m*3mm, 2m*4mm, 2m*1/8
Granularity: 60-80 mesh
Model: GDX-104, GDX-502

Application: HJ 604-2017 Ambient air Determination of total hydrocarbons, methane and non-methane total hydrocarbons Direct injection-gas chromatography

During the monitoring process of non-methane total hydrocarbons, the selection of the waste gas sample storage container and the length of the storage time have an important impact on the analysis results. The research results show that the analysis should be completed within 8 hours when the sample is stored with a glass syringe; the use of Tedlar inert The sample is stored in an air bag, and the storage time can be extended to 48 hours.If the main component in the exhaust gas is a high boiling point compound with a boiling point higher than 150°C, the determination of non-methane total hydrocarbons should be completed within 8 hours.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. adopts automatic sampling and gas splitting technology, dual-column dual-FID detector gas chromatography to determine the total non-methane hydrocarbons in the gas, and realizes the continuous automatic analysis of non-methane total hydrocarbons at the same time. The data of methane and total hydrocarbons can be obtained by sampling. The detection limit of the method is 0.05 mg/m3, the relative standard deviation of the determination is within 0.7%~1.8%, and the recovery rate of non-methane total hydrocarbons is 96.0%~98.5%. Compared with the traditional manual sampling method, this method has the advantages of good repeatability, simple operation, time-saving and high-efficiency, and can greatly improve the analysis efficiency and accuracy of non-methane total hydrocarbons in the gas.


Determination of non-methane total hydrocarbons in the gas Test spectrum: