HH-NMHC-1專(zhuān)用柱 單柱直測(cè)法測(cè)定空氣中甲烷和非甲烷總烴

，此柱為浩瀚色譜的產(chǎn)品。

名稱(chēng)：直測(cè)法專(zhuān)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: