工作場(chǎng)所空氣中一甲胺/二甲胺的溶劑解吸氣相色譜測定  測試譜圖：



Determination of Monomethylamine/Dimethylamine in Workplace Air by Solvent Desorption Gas Chromatography
Solvent Desorption Gas Chromatography Determination of Monomethylamine/Dimethylamine in Workplace Air Details:

Name: capillary column
Stationary Phase: Dedicated
Specifications: 20m*0.32mm*0.45um
Model: HH-Volamine

Application: Determination of Toxic Substances in Workplace Air Part 227: Monomethylamine and Dimethylamine

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a standardized method for the determination of monomethylamine and dimethylamine in workplace air by solvent desorption gas chromatography. Methods Silica gel tube was used to adsorb dimethylamine in the air, decomposed with acidic alcohol solution and neutralized by strong alkali, then injected into gas chromatography, separated by a basic chromatography column with high liquid loading ratio, and determined by FID detector. Results The linear equation of this method was Y=1040.2X-25148(r=0.9999) when the measurement range was 79.7～78.2μg/mL. The minimum detection limit is 5μg/ml; the minimum detection concentration is 1.3mg/m3 (based on the collection of 7.5L air samples); the analytical efficiency is ≧86%; the breakthrough capacity (BTV) is greater than 7.75mg (200mg silica gel); the sample is at 4 It can be stored in the refrigerator for 7 days. Conclusion The method established in this study is suitable for monitoring the concentration of dimethylamine in workplace air.


Determination of Monomethylamine/Dimethylamine in Workplace Air by Solvent Desorption Gas Chromatography Test Spectrum: