产品名称：	5%Carbowax 20M Carbopack B填充柱 气相色谱法测定大气废气中的甲醇
产品型号：	5%Carbowax 20M Carbopack B填充柱
品牌：	1941
产品数量：
产品单价：	面议
日期:	2022-02-07

5%Carbowax 20M Carbopack B填充柱 气相色谱法测定大气废气中的甲醇的详细资料

气相色谱法测定大气废气中的甲醇
气相色谱法测定大气废气中的甲醇 详细信息：

名称：填充柱

色谱固定液：5%聚乙二醇
载体：石墨炭黑80-120目

规格：2m*3mm，2m*1/8

型号：5%Carbowax 20M Carbopack B

应用： HJ T33-1999 固定污染源排气中甲醇的测定气相色谱法

目前测定空气中甲醇的方法主要有品红亚硫酸比色法和气相色谱法.比色法的灵敏度25μg/5ml,不能满足环境中甲醇测定的需要.气相色谱法用纯水吸收空气中的甲醇,从该法的谱图可以看出与乙醇的分离不够理想,当空气中有大量的乙醇与甲醇共存时,对甲醇的分离将带来不利的影响.如要改善分离度,需加长柱子,但水的出峰时间将长达16分钟以上,大大加长了一个样品的分析周期.

浩瀚色谱（山东）应用技术开发有限公司采用石墨化碳黑专用柱，外标法定量，结果准确。


气相色谱法测定大气废气中的甲醇  测试谱图：



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: