5%Carbowax 20M Carbopack B填充柱 氣相色譜法測定大氣廢氣中的甲醇

氣相色譜法測定大氣廢氣中的甲醇
氣相色譜法測定大氣廢氣中的甲醇 詳細(xì)信息：

名稱：填充柱

色譜固定液：5%聚乙二醇
載體：石墨炭黑80-120目

規(guī)格：2m*3mm，2m*1/8

型號：5%Carbowax 20M Carbopack B

應(yīng)用： HJ T33-1999 固定污染源排氣中甲醇的測定氣相色譜法

目前測定空氣中甲醇的方法主要有品紅亞硫酸比色法和氣相色譜法.比色法的靈敏度25μg/5ml,不能滿足環(huán)境中甲醇測定的需要.氣相色譜法用純水吸收空氣中的甲醇,從該法的譜圖可以看出與乙醇的分離不夠理想,當(dāng)空氣中有大量的乙醇與甲醇共存時,對甲醇的分離將帶來不利的影響.如要改善分離度,需加長柱子,但水的出峰時間將長達(dá)16分鐘以上,大大加長了一個樣品的分析周期.

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司采用石墨化碳黑專用柱，外標(biāo)法定量，結(jié)果準(zhǔn)確。


氣相色譜法測定大氣廢氣中的甲醇  測試譜圖：



Determination of Methanol in Atmospheric Waste Gas by Gas Chromatography
Determination of Methanol in Atmospheric Waste Gas by Gas Chromatography Details:

Name: Packed Column

Chromatographic fixative: 5% polyethylene glycol
Carrier: graphite carbon black 80-120 mesh

Specifications: 2m*3mm, 2m*1/8

Model: 5%Carbowax 20M Carbopack B

Application: HJ T33-1999 Determination of methanol in exhaust gas from stationary pollution sources by gas chromatography



At present, the main methods for the determination of methanol in the air are the magenta sulfurous acid colorimetric method and the gas chromatography method. The sensitivity of the colorimetric method is 25μg/5ml, which cannot meet the needs of methanol determination in the environment. The gas chromatography method uses pure water to absorb methanol in the air. , it can be seen from the spectrum of this method that the separation with ethanol is not ideal. When a large amount of ethanol and methanol coexist in the air, it will bring adverse effects on the separation of methanol. To improve the separation, it is necessary to lengthen the column, However, the peak time of water will be as long as more than 16 minutes, which greatly lengthens the analysis period of a sample.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. uses a special column for graphitized carbon black, and the external standard method is used for quantification, and the results are accurate and reliable.


Determination of methanol in atmospheric waste gas by gas chromatography Test spectrum: