聚乙二醇-20M 空气中环氧氯丙烷的新测定毛细管柱

名称：毛细管柱

固定液：聚乙二醇-20M

规格：30m*0.32mm*0.25um

型号：PEG-20M
应用：  空气中环氧氯丙烷的新测定

浩瀚色谱（山东）应用技术开发有限公司建立一种测定空气中环氧氯丙烷的新方法。方法:空气中的环氧氯丙烷用活性碳管采集,热解吸后,经PEG-20M柱分离,氢焰离子化检测器检测,对色谱柱,色谱条件,采集条件,热解吸条件等进行优选。结果:方法的检测限为0.001μg/m l,低检出浓度为0.03 mg/m3(采样体积3 L)。当标准溶液浓度为0.002、0.004、0.010μg/m l时,平均相对标准偏差为5.0%、4.8%、1.2%,标准曲线的相关系数为0.9999。平均解吸效率为97.1%,采样效率为95%,穿透容量大于1.4 mg。样品在采样管中可稳定7 d以上。结论:通过样品测试证明,该法采用活性碳管采样,携带方便,采样代表性好,样品稳定时间长;采样后解吸效率高;所选用的色谱柱具有柱效高,分离度好,色谱峰形好的优点。本法适用于现场监测和个体采样。


空气中环氧氯丙烷的新测定毛细管柱  测试谱图：



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: