HH-NMHC-1 在线/便携使用非甲烷总烃直测填充柱

然而，甲烷在环境空气总烃中占有绝大部分含量，仪器测量中的各种误差，导致差减法得到的非甲烷总烃含量的计算值误差偏大，极端条件下甚会出现总烃测量值小于甲烷测量值的情况，差减后出现非甲烷总烃计算值是负值的尴尬情况。

浩瀚色谱（山东）应用技术开发有限公司,，研发直接测量非甲烷总烃的直测法，以便精确稳定地检测环境vocs污染，避免了总烃减去甲烷出现负值的情况，柱效高，结果准确。

名称：甲烷填充柱

粒度：60-80目

规格：1m*1/8

高温度：270℃    

应用：非甲烷总烃的直接测定  气相色谱法

在线/便携使用非甲烷总烃直测填充柱 测试谱图：





Determination of purity of N - methyldiethanolamine for industrial use Capillary column

Details of capillary column for purity determination of N - methyldiethanolamine for industrial use:



Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a capillary gas chromatography method for the simultaneous determination of MDEA and piperazine (PIP) in N-methyldiethanolamine (MDEA) decarburizer. The experimental results were verified by GC-MS, and the effects of different chromatographic columns, solvents, and dehydrating agents on the determination results were investigated. The experimental results show that the content of MDEA and PIP in MDEA decarburizer can be determined simultaneously by using HH-1 capillary column, hydrogen flame ionization detector, methanol as solvent, sample without dehydration and external standard method for quantification. The determination results are as follows: the MDEA content in MDEA decarburizer stock solution is 99.0%~99.3% (w), and the PIP content is 10.1%~10.4% (w); The MDEA content in the working solution of MDEA decarburizer is 41.4%~42.9% (w), and the PIP content is 7.3%~8.2% (w); The recovery rate of MDEA is 96.43%~99.98%, and that of PIP is 96.64%~102.02%; MDEA detection limit is 0.21 μ G/L, PIP detection limit is 0.29 μ g/L。 This method has the characteristics of simple operation, fast analysis speed, accuracy, good separation effect and high precision, which can meet the analysis requirements in the factory production and quality inspection process.






Name: capillary column



Stationary phase: 100% dimethylpolysiloxane



Specification: 60m * 0.53mm * 5um



Model: HH-1

Application: N - methyldiethanolamine for industrial use




Capillary column test spectrogram for purity determination of N - methyldiethanolamine for industrial use: