、批間精密度相對標準偏差(RSD)分別為2.93％～6.20％和3.67％～6.44％,平均解吸效率為94.22％～97.27％,樣品在室溫下少可保存7d.結(jié)論 本方法可用于監(jiān)測工作場所空氣中二乙氧基甲烷的水平.

工作場所空氣中二乙氧基甲烷測定  測試譜圖：



Determination of Diethoxymethane in the Air of Workplace
Determination of Diethoxymethane in the Air of Workplace Details:

Name: Capillary Column
Specification: 30m*0.32mm
Model: HH-5


Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. established a solvent desorption-gas chromatography method for the determination of diethoxymethane in the air in the workplace. Method The diethoxymethane in the air is collected by activated carbon tube, carbon disulfide desorbed, and separated by capillary chromatography column. Detection by hydrogen flame ionization detector. Results The mass concentration of diethoxymethane in this method has a good linear relationship between 0.87～34 800.00mg/L, and the correlation coefficient is 0.999 7. The detection limit and the lower limit of quantification are 0.25 mg/L and 0.90, respectively. mg/L, the lowest detected mass concentration and the lowest quantitative mass concentration were 0.17 and 0.60 mg/m3 (based on the collected air of 1.5L). The relative standard deviation (RSD) of precision within and between batches were 2.93%～6.20, respectively % And 3.67% to 6.44%, the average desorption efficiency is 94.22% to 97.27%, and the sample can be stored for at least 7 days at room temperature. Conclusion This method can be used to monitor the level of diethoxymethane in the air in the workplace.

Determination of diethoxymethane in the air of the workplace Test spectrum: