OV-17毛細(xì)管柱 工作場所空氣中苯系物的毛細(xì)管柱

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Capillary column of benzene series in the air of workplace
Capillary column of benzene series in the air of workplace. Details:

Name: Capillary Column

Specification: 30m*0.32mm*0.5um

Model: OV-17

Application: Capillary column of benzene series in the air of workplace

Tengzhou Haohan Chromatography Instrument Technology Service Co., Ltd. optimized the test conditions of capillary column-gas chromatography for the determination of benzene, toluene, o-xylene, m-xylene, p-xylene, ethylbenzene and styrene in the air of workplace. Method: The temperature-programmed capillary column gas chromatography was used for the determination, and the methodology test and interference test were carried out. Results: The determination of 7 kinds of benzene series was completed within 10 minutes and had a good separation effect. The coexistents chloroform, ethyl formate and acetate did not interfere with the determination; the concentration of benzene series was in the range of 1.60～906.00μg/mL A good linear equation can be obtained, and the correlation coefficient (r) is 0.9992~0.9999; the lower determination limits are: benzene 1.60μg/mL, toluene 1.80μg/mL, o-xylene 2.38μg/mL, m-xylene 2.18μg/mL , P-xylene 2.13μg/mL, ethylbenzene 2.01μg/mL and styrene 2.62μg/mL; desorption efficiency is 78.7%～104.8%; precision (RSD) is 1.5%～4.3%; spiked recovery rate is 98.9 %～105.0%. Conclusion: This method is easy to operate, reproducibility and sensitivity are in line with laboratory testing requirements, and the coexistents chloroform, ethyl formate, and acetate do not interfere with the determination. It is suitable for detecting the content of benzene series in the workplace.