固定相：高聚物
規(guī)格2m*3mm，2m*4mm，2m*1/8
粒度：60-80目
型號：GDX-104，GDX-502

應(yīng)用：HJ 604-2017 環(huán)境空氣 總烴、甲烷和非甲烷總烴的測定 直接進樣-氣相色譜法

非甲烷總烴在監(jiān)測過程中,廢氣樣品保存容器的選擇和保存時間的長短對分析結(jié)果有重要影響.研究結(jié)果表明:使用玻璃注射器保存樣品,應(yīng)在8 h內(nèi)完成分析;使用泰德拉惰性氣袋保存樣品,保存時間可延長48 h,如廢氣中主要組分為沸點高于150℃的高沸點化合物,則應(yīng)在8 h內(nèi)完成非甲烷總烴的測定.

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司采用自動進樣和氣體分流技術(shù),雙柱雙FID檢測器氣相色譜法測定氣體中的非甲烷總烴,實現(xiàn)了非甲烷總烴的連續(xù)自動分析,同時一次進樣即可得到甲烷和總烴的數(shù)據(jù)。方法的檢出限為0.05 mg/m3,測定的相對標準偏差在0.7%~1.8%內(nèi),非甲烷總烴的加標回收率為96.0%~98.5%。與傳統(tǒng)手動進樣法相比,本方法具有重復(fù)性好、操作簡單、省時等優(yōu)點,可大大提高氣體中非甲烷總烴的分析效率和準確度。


測定氣體中非甲烷總烴 測試譜圖：



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: