GDX-502 大气中总烃、甲烷、非甲烷烃色谱分析

固定相：高分子小球

GDX-502，2m*3mm，2m*4mm，2m*1/8，60-80目

甲烷柱

总烃柱

2m*3mm，2m*4mm，2m*1/8，硅烷化玻璃微球



      随着我国石油工业的飞速发展及汽车数量的日益增多,大气中烃类的污染较为严重,它与氮氧化物在阳光紫外线照射下产生“光化学烟雾”.经国外长期研究证明,烃类是形成“光化学烟雾”的重要起源物质.为此,要研究“光化学烟雾”的污染规律,首先弄清楚烃类在大气中的污染状况是十分必要的.目前分析总烃的手段并不多,有选择燃烧法、红外法、色谱法等.色谱法对分析烃类具有灵敏度高、速度快等优点,大多数都采用以CH_4为标气,测得总烃浓度。



      滕州市浩瀚色谱仪器技术服务有限公司，介绍了目前色谱法测定环境大气中总碳氢化合物常用的几种方法,分析了它们的特点、长处以及适用范围。针对方法各自的特点及局限性,提出根据分析对象的性质、现场环境和实际条件来确定效果较好的采样方式和分析手续。



大气中总烃、甲烷、非甲烷烃色谱分析 图片：







Chromatographic analysis of total hydrocarbons, methane and non-methane hydrocarbons in the atmosphere

Chromatographic analysis of total hydrocarbons, methane, and non-methane hydrocarbons in the atmosphere.



Stationary phase: polymer pellet

GDX-502, 2m*3mm, 2m*4mm, 2m*1/8, 60-80 mesh

Methane column



Total hydrocarbon column

2m*3mm, 2m*4mm, 2m*1/8, silanized glass microspheres



      With the rapid development of China's petroleum industry and the increasing number of automobiles, the pollution of hydrocarbons in the atmosphere is more serious. It produces "photochemical smog" with nitrogen oxides under the ultraviolet radiation of sunlight. Long-term studies abroad have proved that hydrocarbons are formed. The important source of "photochemical smog". To study the pollution law of "photochemical smog", it is necessary to first understand the pollution of hydrocarbons in the atmosphere. At present, there are not many methods for analyzing total hydrocarbons. Combustion method, infrared method, chromatography, etc. Chromatography has the advantages of high sensitivity and high speed for analyzing hydrocarbons. Most of them use CH_4 as the standard gas to measure the total hydrocarbon concentration.



      Tengzhou Haohao Chromatography Instrument Technology Service Co., Ltd. introduced several methods commonly used in the determination of total hydrocarbons in the ambient atmosphere by chromatography, and analyzed their characteristics, strengths and scope of application. According to the characteristics and limitations of the method, it is proposed to determine the sampling method and analysis procedure with better effect according to the nature of the analysis object, the site environment and the actual conditions.



Chromatographic analysis of total hydrocarbons, methane and non-methane hydrocarbons in the atmosphere