單柱直測(cè)法測(cè)定空氣中甲烷和非甲烷總烴，芝麻香白酒，3-甲硫基丙醇，室內(nèi)空氣，焦?fàn)t煤氣，煉廠氣，天然氣，變壓器油，多氯聯(lián)苯，植物油，增塑劑，塑化劑，過氧化物，三甲胺

單柱直測(cè)法測(cè)定空氣中甲烷和非甲烷總烴
單柱直測(cè)法測(cè)定空氣中甲烷和非甲烷總烴 詳細(xì)信息：


用直接進(jìn)樣差量氣相色譜法測(cè)定非甲烷總烴(NMHC)量。測(cè)定結(jié)果將產(chǎn)生較大偏差,甚可能產(chǎn)生負(fù)值,應(yīng)該用以除烴空氣為底氣的標(biāo)準(zhǔn)氣來定量空氣樣品;某些樣品測(cè)定過程中,總烴不只出一個(gè)峰,需要調(diào)節(jié)相關(guān)條件再進(jìn)行測(cè)定。

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司采用單柱單氫火焰離子檢測(cè)器(FID)氣相色譜法測(cè)定空氣中的非甲烷總烴(NMHC)和甲烷,通過十通閥進(jìn)樣和切換,實(shí)現(xiàn)一次進(jìn)樣就可以完成甲烷和NMHC的同步測(cè)定,且無氧峰干擾。與雙柱雙FID檢測(cè)器氣相色譜法相比,該方法不用測(cè)算氧峰,更加簡便,分析結(jié)果準(zhǔn)確,且重復(fù)性良好。

此法只需2根填充柱，一次進(jìn)樣，即可得到非甲烷總烴的含量，效率高，結(jié)果準(zhǔn)確，此柱為浩瀚色譜的產(chǎn)品。

名稱：直測(cè)法專用填充柱
規(guī)格：1m*1/8
型號(hào)：HH-NMHC
滿足2021年新標(biāo)準(zhǔn)


單柱直測(cè)法測(cè)定空氣中甲烷和非甲烷總烴  測(cè)試譜圖：




Determination of methane and non-methane total hydrocarbons in air by single-column direct measurement
Determination of methane and non-methane total hydrocarbons in air by single-column direct measurement Details:


The amount of non-methane total hydrocarbons (NMHC) was determined by direct injection differential gas chromatography. The measurement results will produce large deviations, and may even produce negative values. The standard gas with hydrocarbon-removing air as the bottom gas should be used to quantify the air samples; during the determination of some samples, the total hydrocarbons have more than one peak, and the relevant conditions need to be adjusted. Determination.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. uses single-column single-hydrogen flame ionization detector (FID) gas chromatography to determine non-methane total hydrocarbons (NMHC) and methane in the air. The ten-port valve is injected and switched to achieve one-time Simultaneous determination of methane and NMHC can be accomplished by injecting the sample without the interference of oxygen peaks. Compared with the dual-column dual-FID detector gas chromatography method, this method does not need to measure the oxygen peak, which is simpler, and the analytical results are accurate and reliable, and the repeatability is good.

This method requires only 2 packed columns and one injection to obtain the content of total non-methane hydrocarbons, with high efficiency and accurate and reliable results. This column is a unique product of Haohan Chromatography.

Name: Packed column for direct measurement
Specifications: 1m*1/8
Model: HH-NMHC
Meet the new standards for 2021


Determination of methane and non-methane total hydrocarbons in air by single-column direct measurement Test spectrum: