熱脫附管對正已烷和丙酮吸附采樣
熱脫附管對正已烷和丙酮吸附采樣 詳細信息:
Tenax-TA 是基于2,6-二苯基呋喃(2,6-diphenylene oxide)的多孔型聚合物,用于提取氣、液體和固體吹掃產生的揮發性和半揮發性物質,EPA與NIOSH已經將這種方式作為標準分析方法分析VOC組分,這種方法使用熱解析或者吹掃捕集裝置可以檢測到ppb或者ppt級的揮發性有機物。由于其對于水的低親和性,它更加適合用于從高水份中吹掃捕集易揮發性有機物甚水中易揮發性有機物的分析。
浩瀚色譜(山東)應用技術開發有限公司采用熱脫附-毛細管氣相色譜法,探索Tenax-TA熱脫附管對空氣中正已烷和丙酮的吸附性能,通過測定加標回收率方法,確定的采樣條件。結果顯示用Tenax-TA熱脫附管采樣分析正已烷的采樣條件為:采樣流量在200 m L/min,穿透體積為6 L。用Tenax-TA熱脫附管采樣分析丙酮的采樣條件為采樣流量50 m L/min,采樣體積0.5 L。
熱脫附管對正已烷和丙酮吸附采樣 測試譜圖:










Adsorption and sampling of n-hexane and acetone by thermal desorption tube
Thermal desorption tube for adsorption and sampling of n-hexane and acetone. Details:
Tenax-TA is a porous polymer ba
sed on 2,6-diphenylene oxide, used to extract volatile and semi-volatile substances generated by gas, liquid and solid purging, EPA and NIOSH This method has been used as a standard analysis method to analyze VOC components. This method uses thermal analysis or purge trap devices to detect ppb or ppt-level volatile organic compounds. Because of its low affinity for water, it is more suitable for purge and trap volatile organic compounds from high moisture and even analysis of volatile organic compounds in water.
Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. uses thermal desorption-capillary gas chromatography to explore the adsorption performance of Tenax-TA thermal desorption tube for n-hexane and acetone in the air, and determine the best by measuring the recovery rate of standard addition. The sampling conditions. The results show that the best sampling co
nditions for sampling and analyzing n-hexane with Tenax-TA thermal desorption tube are: the sampling flow rate is 200 m L/min, and the penetration volume is 6 L. The best sampling co
nditions for sampling and analyzing acetone with Tenax-TA thermal desorption tube are the sampling flow rate of 50 m L/min and the sampling volume of 0.5 L.
Thermal desorption tube for adsorption and sampling of n-hexane and acetone Test spectrum:
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