haohan工作场所空气中一甲胺和二甲胺测定HH-Tamine60毛细管柱60m*0.32mm

浩瀚色谱（山东）应用技术开发有限公司建立工作场所空气中一甲胺和二甲胺的顶空气相色谱测定方法.方法用酸性吸收液采集空气中的一甲胺,二甲胺,碱溶液中和后顶空进样气相色谱,经：HH-Tamine60甲胺专用毛细管柱
分离,氢焰离子化检测器测定.结果一甲胺浓度为3.06-48.88μg/ml时,标准曲线回归方程为P=667.65X-1596.9(r=0.9991),二甲胺浓度为3.08～49.32μg/ml时,标准曲线的回归方程为:Y=2123.1X-3437.4(r=-0.9993).一甲胺方法检出限为2.6μg/ml,*低检出浓度为1.6mg/m^3(以采集7.5L空气样品计);一甲胺检出限为1.8μg/ml,*低检出浓度为1.2mg/m^3.样品于4℃冰箱内可保存5d.结论该方法可以满足同时测定工作场所空气中一甲胺和二甲胺浓度的要求.

名称：HH-Tamine60甲胺专用毛细管柱
规格：60m*0.32mm
*高使用温度：280°C
编号：20220109001
Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. established a headspace gas chromatographic method for the determination of monomethylamine and dimethylamine in the air of workplaces. Methods The monomethylamine and dimethylamine in the air were collected with acid absorption solution, neutralized with alkali solution, and then injected into the headspace gas chromatography. The method was applied to HH-Tamine60 methylamine special capillary column

Separation and determination by hydrogen flame ionization detector. The concentration of monomethylamine is 3.06-48.88 μ At g/ml, the regression equation of standard curve is P=667.65X-1596.9 (r=0.9991), and the concentration of dimethylamine is 3.08-49.32 μ When g/ml, the regression equation of standard curve is: Y=2123.1X-3437.4 (r=-0.9993). The detection limit of monomethylamine method is 2.6 μ G/ml, the lowest detectable concentration is 1.6mg/m3 (calculated by collecting 7.5L air sample); The detection limit of monomethylamine is 1.8 μ G/ml, the lowest detectable concentration is 1.2mg/m ^ 3. The sample can be stored in the refrigerator at 4 ℃ for 5d. Conclusion This method can meet the requirements of simultaneous determination of the concentration of monomethylamine and dimethylamine in the air of workplace



Name: HH-Tamine60 methylamine special capillary column

Specification: 60m * 0.32mm

Maximum operating temperature: 280 ° C

No.: 20220109001