吸附管和熱解吸及色譜分析TVOC，液化石油氣，二甲醚，甲縮醛，乙縮醛，乙醇，室內(nèi)空氣，焦爐煤氣，煉廠氣，天然氣，變壓器油，多氯聯(lián)苯，植物油，增塑劑，塑化劑，消毒劑，氨水

吸附管和熱解吸及色譜分析TVOC
吸附管和熱解吸及色譜分析TVOC 詳細信息：

浩瀚色譜（山東）應用技術開發(fā)有限公司通過測定苯回收率的方法探討了使用Tenax-TA吸附劑檢測室內(nèi)空氣中苯濃度的影響因素,如樣品濃度、Tenax-TA試劑重量、采樣溫度、采樣流速、采樣體積等。試驗結果表明,在一定濃度范圍內(nèi),樣品濃度不影響苯回收率;采樣流速對苯回收率影響較小;而Tenax-TA試劑重量、采樣溫度和采樣體積對苯回收率影響顯著。


Tenax-TA吸附管是測定室內(nèi)空氣揮發(fā)性有機化合物(TVOC)的重要材料,保持Tenax-TA吸附管空白值處于較低水平對測定結果的準確性非常重要。選擇國內(nèi)外具有代表性的三種不同型號Tenax-TA吸附管,探討了新購吸附管活化時間、活化后的存放環(huán)境和保存時間以及吸附管的密封情況對空白值的影響,并終給出吸附管的保存要求和空白值的高允許含量,以室內(nèi)空氣檢測結果的準確性。


名稱：TVOC采樣管/Tenax -TA吸附管
外徑：不銹鋼管內(nèi)徑為4mm，外徑為6mm，外徑1/4（美標）。
長度：150mm、90mm，3.5英寸（美標）。
填充重量：200mg
吸附劑的粒徑一般為60～80目。
型號：6*90,  6*150， 1/4*3.5Y英寸
形狀：直通，U型
材質(zhì)：不銹鋼/玻璃
密封：膠冒（默認），四氟（選配），黃銅（選購）
適用于室內(nèi)空氣濃度0.5mg/m3～100mg/m3之間的空氣中VOCs的檢測。
參考標準：
HJ 583-2010環(huán)境空氣苯系物的測定 固體吸附-熱脫附/氣相色譜法
GB50325-2010民用建筑工程室內(nèi)環(huán)境污染控制規(guī)范
BG/T18883-2002室內(nèi)空氣質(zhì)量標準
HJ644-2013環(huán)境空氣 揮發(fā)性有機物測定


吸附管和熱解吸及色譜分析TVOC 測試評價：




Adsorption tube and thermal desorption and chromatographic analysis TVOC
Adsorption tube and thermal desorption and chromatographic analysis of TVOC Details:

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. has explored the influencing factors of using Tenax-TA adsorbent to detect benzene concentration in indoor air by measuring the benzene recovery rate, such as sample concentration, Tenax-TA reagent weight, sampling temperature, and sampling flow rate. , Sampling volume, etc. The test results show that within a certain concentration range, the sample concentration does not affect the benzene recovery rate; the sampling flow rate has little effect on the benzene recovery rate; while the Tenax-TA reagent weight, sampling temperature and sampling volume have significant effects on the benzene recovery rate.


Tenax-TA adsorption tube is an important material for the determination of indoor air volatile organic compounds (TVOC). Keeping the blank value of Tenax-TA adsorption tube at a low level is very important for the accuracy of the measurement results. Three representative types of Tenax-TA adsorption tubes at home and abroad are selected, and the activation time of the newly purchased adsorption tube, the storage environment and storage time after activation, and the influence of the sealing condition of the adsorption tube on the blank value are discussed, and finally given The storage requirements of the adsorption tube and the maximum allowable content of the blank value are to ensure the accuracy of the indoor air test results.


Name: TVOC sampling tube/Tenax-TA adsorption tube
Outer diameter: The inner diameter of the stainless steel pipe is 4mm, the outer diameter is 6mm, and the outer diameter is 1/4 (American standard).
Length: 150mm, 90mm, 3.5 inches (American standard).
Filling weight: 200mg
The particle size of the adsorbent is generally 60 to 80 mesh.
Model: 6*90, 6*150, 1/4*3.5Y inches
Shape: straight, U-shaped
Material: stainless steel/glass
Seal: rubber cap (default), PTFE (optional), brass (optional)
It is suitable for the detection of VOCs in the air with indoor air concentration between 0.5mg/m3～100mg/m3.
Guideline:
HJ 583-2010 Determination of Ambient Air Benzene Series Solid Adsorption-Thermal Desorption/Gas Chromatography
GB50325-2010 Indoor Environmental Pollution Control Code for Civil Construction Engineering
BG/T18883-2002 Indoor Air Quality Standard
HJ644-2013 Ambient Air Volatile Organic Compound Determination


Adsorption tube and thermal desorption and chromatographic analysis TVOC test evaluation: