氣相色譜法測定環(huán)境空氣和廢氣中的甲醇，液化石油氣，二甲醚，甲縮醛，乙縮醛，乙醇，室內(nèi)空氣，焦爐煤氣，煉廠氣，天然氣，變壓器油，多氯聯(lián)苯，過氧化物，DTBP，MTBE，TVOC

氣相色譜法測定環(huán)境空氣和廢氣中的甲醇
氣相色譜法測定環(huán)境空氣和廢氣中的甲醇 詳細信息：

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

應用： HJ T33-1999 固定污染源排氣中甲醇的測定氣相色譜法

空氣和廢氣監(jiān)測分析方法一書第五章中甲醇的氣相色譜分析方法,應該解決采樣時間長回收效率低和色譜分離存在在拖尾大水峰三個方面的問題。

浩瀚色譜（山東）應用技術(shù)開發(fā)有限公司首先使用純水為吸收液,吸收空氣中的甲醇,再采用頂空氣相色譜法分析吸收液中甲醇濃度,由此建立了自動頂空5%Carbowax 20M Carbopack B填充柱氣相色譜法測定空氣和廢氣中甲醇的方法,并對自動頂空進樣條件進行了優(yōu)化。結(jié)果表明,當采樣體積為24 L、吸收液體積5 mL時,該方法的低檢出濃度為0.1 mg/m3,相對標準偏差為2.1%～5.3%,加標回收率為95%～108%。該法操作簡單,具有較好的靈敏度和的準確度,自動化程度高,可連續(xù)完成樣品的前處理、樣品進樣和色譜分析。


氣相色譜法測定環(huán)境空氣和廢氣中的甲醇  測試譜圖：




Determination of Methanol in Ambient Air and Waste Gas by Gas Chromatography
Determination of Methanol in Ambient Air and Exhaust 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



The gas chromatographic analysis method of methanol in Chapter 5 of the book Air and Waste Gas Monitoring and Analysis Methods should solve the problems of long sampling time, low recovery efficiency and chromatographic separation in three aspects of tailing large water peaks.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. first used pure water as the absorption liquid to absorb methanol in the air, and then used headspace gas chromatography to analyze the methanol concentration in the absorption liquid, thus establishing an automatic headspace 5% Carbowax 20M Carbopack B. A method for the determination of methanol in air and waste gas by packed-column gas chromatography, and the automatic headspace injection conditions were optimized. The results show that when the sampling volume is 24 L and the absorption liquid volume is 5 mL, the minimum detection concentration of this method is 0.1 mg/m3, the relative standard deviation is 2.1%-5.3%, and the recovery rate of standard addition is 95%-108% . The method is simple to operate, has good sensitivity and reliable accuracy, and has a high degree of automation. It can continuously complete sample pretreatment, sample injection and chromatographic analysis.


Determination of methanol in ambient air and exhaust gas by gas chromatography Test spectrum: