聚乙二醇-20M 空氣中環(huán)氧氯丙烷的新測定毛細(xì)管柱

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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: