名稱：毛細(xì)管柱

固定液：聚乙二醇-20M

規(guī)格：30m*0.32mm*0.25um

型號：PEG-20M
應(yīng)用：  空氣中環(huán)氧氯丙烷的新測定

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司建立一種測定空氣中環(huán)氧氯丙烷的新方法。方法:空氣中的環(huán)氧氯丙烷用活性碳管采集,熱解吸后,經(jīng)PEG-20M柱分離,氫焰離子化檢測器檢測,對色譜柱,色譜條件,采集條件,熱解吸條件等進(jìn)行優(yōu)選。結(jié)果:方法的檢測限為0.001μg/m l,低檢出濃度為0.03 mg/m3(采樣體積3 L)。當(dāng)標(biāo)準(zhǔn)溶液濃度為0.002、0.004、0.010μg/m l時,平均相對標(biāo)準(zhǔn)偏差為5.0%、4.8%、1.2%,標(biāo)準(zhǔn)曲線的相關(guān)系數(shù)為0.9999。平均解吸效率為97.1%,采樣效率為95%,穿透容量大于1.4 mg。樣品在采樣管中可穩(wěn)定7 d以上。結(jié)論:通過樣品測試證明,該法采用活性碳管采樣,攜帶方便,采樣代表性好,樣品穩(wěn)定時間長;采樣后解吸效率高;所選用的色譜柱具有柱效高,分離度好,色譜峰形好的優(yōu)點。本法適用于現(xiàn)場監(jiān)測和個體采樣。


空氣中環(huán)氧氯丙烷的新測定毛細(xì)管柱  測試譜圖：



A new capillary column for the determination of epichlorohydrin in air
New capillary column for the determination of epichlorohydrin in air Details:

Name: capillary column

Fixative: polyethylene glycol-20M

Specifications: 30m*0.32mm*0.25um

Model: PEG-20M
Application: New determination of epichlorohydrin in air

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. established a new method for the determination of epichlorohydrin in air. Methods: The epichlorohydrin in the air was collected by activated carbon tube, and after thermal desorption, it was separated by PEG-20M column and detected by hydrogen flame ionization detector. Make optimization. Results: The detection limit of the method was 0.001 μg/m l, and the minimum detection concentration was 0.03 mg/m3 (sampling volume was 3 L). When the concentration of the standard solution was 0.002, 0.004 and 0.010 μg/ml, the average relative standard deviations were 5.0%, 4.8% and 1.2%, and the correlation coefficient of the standard curve was 0.9999. The average desorption efficiency was 97.1%, the sampling efficiency was 95%, and the penetration capacity was greater than 1.4 mg. The sample can be stable for more than 7 days in the sampling tube. Conclusion: It is proved by sample test that the method adopts activated carbon tube for sampling, which is convenient to carry, has good sampling representative, and has a long sample stability time; the desorption efficiency after sampling is high; the selected chromatographic column has high column efficiency, good resolution, and chromatographic peak good form. This law applies to on-site monitoring and individual sampling.


Test chromatogram of a new capillary column for the determination of epichlorohydrin in air: